Keyboard: Add new keyboard "Sol" from RGBKB (#4497)

* Add final RGBKB Sol firmware

* Apply suggestions from code review

Apply most of the changes noroadsleft has suggested

Co-Authored-By: Legonut <legonut3@gmail.com>

* Cleanup readme

* Cleanup keymaps per @noroadslefts suggestions

* Remove eeproms, use set_single_persistent_default_layer

* Suggestions from @noroadsleft and @drashna

some small cleanup

* Change RGB_SMOD to RGB_RMOD

* fix RGB_SMOD

* Apply suggestions from code review

Remove redundant lines

Co-Authored-By: Legonut <legonut3@gmail.com>

keyboards/sol/common/glcdfont.c

@@ -0,0 +1,244 @@
+// This is the 'classic' fixed-space bitmap font for Adafruit_GFX since 1.0.
+// See gfxfont.h for newer custom bitmap font info.
+
+#ifndef FONT5X7_H
+#define FONT5X7_H
+
+#ifdef __AVR__
+ #include <avr/io.h>
+ #include <avr/pgmspace.h>
+#elif defined(ESP8266)
+ #include <pgmspace.h>
+#else
+ #define PROGMEM
+#endif
+
+// Standard ASCII 5x7 font
+
+static const unsigned char font[] PROGMEM = {
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x3E, 0x5B, 0x4F, 0x5B, 0x3E, 0x00,
+  0x3E, 0x6B, 0x4F, 0x6B, 0x3E, 0x00,
+  0x1C, 0x3E, 0x7C, 0x3E, 0x1C, 0x00,
+  0x18, 0x3C, 0x7E, 0x3C, 0x18, 0x00,
+  0x1C, 0x57, 0x7D, 0x57, 0x1C, 0x00,
+  0x1C, 0x5E, 0x7F, 0x5E, 0x1C, 0x00,
+  0x00, 0x18, 0x3C, 0x18, 0x00, 0x00,
+  0xFF, 0xE7, 0xC3, 0xE7, 0xFF, 0x00,
+  0x00, 0x18, 0x24, 0x18, 0x00, 0x00,
+  0xFF, 0xE7, 0xDB, 0xE7, 0xFF, 0x00,
+  0x30, 0x48, 0x3A, 0x06, 0x0E, 0x00,
+  0x26, 0x29, 0x79, 0x29, 0x26, 0x00,
+  0x40, 0x7F, 0x05, 0x05, 0x07, 0x00,
+  0x40, 0x7F, 0x05, 0x25, 0x3F, 0x00,
+  0x5A, 0x3C, 0xE7, 0x3C, 0x5A, 0x00,
+  0x7F, 0x3E, 0x1C, 0x1C, 0x08, 0x00,
+  0x08, 0x1C, 0x1C, 0x3E, 0x7F, 0x00,
+  0x14, 0x22, 0x7F, 0x22, 0x14, 0x00,
+  0x5F, 0x5F, 0x00, 0x5F, 0x5F, 0x00,
+  0x06, 0x09, 0x7F, 0x01, 0x7F, 0x00,
+  0x00, 0x66, 0x89, 0x95, 0x6A, 0x00,
+  0x60, 0x60, 0x60, 0x60, 0x60, 0x00,
+  0x94, 0xA2, 0xFF, 0xA2, 0x94, 0x00,
+  0x08, 0x04, 0x7E, 0x04, 0x08, 0x00,
+  0x10, 0x20, 0x7E, 0x20, 0x10, 0x00,
+  0x08, 0x08, 0x2A, 0x1C, 0x08, 0x00,
+  0x08, 0x1C, 0x2A, 0x08, 0x08, 0x00,
+  0x1E, 0x10, 0x10, 0x10, 0x10, 0x00,
+  0x0C, 0x1E, 0x0C, 0x1E, 0x0C, 0x00,
+  0x30, 0x38, 0x3E, 0x38, 0x30, 0x00,
+  0x06, 0x0E, 0x3E, 0x0E, 0x06, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x5F, 0x00, 0x00, 0x00,
+  0x00, 0x07, 0x00, 0x07, 0x00, 0x00,
+  0x14, 0x7F, 0x14, 0x7F, 0x14, 0x00,
+  0x24, 0x2A, 0x7F, 0x2A, 0x12, 0x00,
+  0x23, 0x13, 0x08, 0x64, 0x62, 0x00,
+  0x36, 0x49, 0x56, 0x20, 0x50, 0x00,
+  0x00, 0x08, 0x07, 0x03, 0x00, 0x00,
+  0x00, 0x1C, 0x22, 0x41, 0x00, 0x00,
+  0x00, 0x41, 0x22, 0x1C, 0x00, 0x00,
+  0x2A, 0x1C, 0x7F, 0x1C, 0x2A, 0x00,
+  0x08, 0x08, 0x3E, 0x08, 0x08, 0x00,
+  0x00, 0x80, 0x70, 0x30, 0x00, 0x00,
+  0x08, 0x08, 0x08, 0x08, 0x08, 0x00,
+  0x00, 0x00, 0x60, 0x60, 0x00, 0x00,
+  0x20, 0x10, 0x08, 0x04, 0x02, 0x00,
+  0x3E, 0x51, 0x49, 0x45, 0x3E, 0x00,
+  0x00, 0x42, 0x7F, 0x40, 0x00, 0x00,
+  0x72, 0x49, 0x49, 0x49, 0x46, 0x00,
+  0x21, 0x41, 0x49, 0x4D, 0x33, 0x00,
+  0x18, 0x14, 0x12, 0x7F, 0x10, 0x00,
+  0x27, 0x45, 0x45, 0x45, 0x39, 0x00,
+  0x3C, 0x4A, 0x49, 0x49, 0x31, 0x00,
+  0x41, 0x21, 0x11, 0x09, 0x07, 0x00,
+  0x36, 0x49, 0x49, 0x49, 0x36, 0x00,
+  0x46, 0x49, 0x49, 0x29, 0x1E, 0x00,
+  0x00, 0x00, 0x14, 0x00, 0x00, 0x00,
+  0x00, 0x40, 0x34, 0x00, 0x00, 0x00,
+  0x00, 0x08, 0x14, 0x22, 0x41, 0x00,
+  0x14, 0x14, 0x14, 0x14, 0x14, 0x00,
+  0x00, 0x41, 0x22, 0x14, 0x08, 0x00,
+  0x02, 0x01, 0x59, 0x09, 0x06, 0x00,
+  0x3E, 0x41, 0x5D, 0x59, 0x4E, 0x00,
+  0x7C, 0x12, 0x11, 0x12, 0x7C, 0x00,
+  0x7F, 0x49, 0x49, 0x49, 0x36, 0x00,
+  0x3E, 0x41, 0x41, 0x41, 0x22, 0x00,
+  0x7F, 0x41, 0x41, 0x41, 0x3E, 0x00,
+  0x7F, 0x49, 0x49, 0x49, 0x41, 0x00,
+  0x7F, 0x09, 0x09, 0x09, 0x01, 0x00,
+  0x3E, 0x41, 0x41, 0x51, 0x73, 0x00,
+  0x7F, 0x08, 0x08, 0x08, 0x7F, 0x00,
+  0x00, 0x41, 0x7F, 0x41, 0x00, 0x00,
+  0x20, 0x40, 0x41, 0x3F, 0x01, 0x00,
+  0x7F, 0x08, 0x14, 0x22, 0x41, 0x00,
+  0x7F, 0x40, 0x40, 0x40, 0x40, 0x00,
+  0x7F, 0x02, 0x1C, 0x02, 0x7F, 0x00,
+  0x7F, 0x04, 0x08, 0x10, 0x7F, 0x00,
+  0x3E, 0x41, 0x41, 0x41, 0x3E, 0x00,
+  0x7F, 0x09, 0x09, 0x09, 0x06, 0x00,
+  0x3E, 0x41, 0x51, 0x21, 0x5E, 0x00,
+  0x7F, 0x09, 0x19, 0x29, 0x46, 0x00,
+  0x26, 0x49, 0x49, 0x49, 0x32, 0x00,
+  0x03, 0x01, 0x7F, 0x01, 0x03, 0x00,
+  0x3F, 0x40, 0x40, 0x40, 0x3F, 0x00,
+  0x1F, 0x20, 0x40, 0x20, 0x1F, 0x00,
+  0x3F, 0x40, 0x38, 0x40, 0x3F, 0x00,
+  0x63, 0x14, 0x08, 0x14, 0x63, 0x00,
+  0x03, 0x04, 0x78, 0x04, 0x03, 0x00,
+  0x61, 0x59, 0x49, 0x4D, 0x43, 0x00,
+  0x00, 0x7F, 0x41, 0x41, 0x41, 0x00,
+  0x02, 0x04, 0x08, 0x10, 0x20, 0x00,
+  0x00, 0x41, 0x41, 0x41, 0x7F, 0x00,
+  0x04, 0x02, 0x01, 0x02, 0x04, 0x00,
+  0x40, 0x40, 0x40, 0x40, 0x40, 0x00,
+  0x00, 0x03, 0x07, 0x08, 0x00, 0x00,
+  0x20, 0x54, 0x54, 0x78, 0x40, 0x00,
+  0x7F, 0x28, 0x44, 0x44, 0x38, 0x00,
+  0x38, 0x44, 0x44, 0x44, 0x28, 0x00,
+  0x38, 0x44, 0x44, 0x28, 0x7F, 0x00,
+  0x38, 0x54, 0x54, 0x54, 0x18, 0x00,
+  0x00, 0x08, 0x7E, 0x09, 0x02, 0x00,
+  0x18, 0xA4, 0xA4, 0x9C, 0x78, 0x00,
+  0x7F, 0x08, 0x04, 0x04, 0x78, 0x00,
+  0x00, 0x44, 0x7D, 0x40, 0x00, 0x00,
+  0x20, 0x40, 0x40, 0x3D, 0x00, 0x00,
+  0x7F, 0x10, 0x28, 0x44, 0x00, 0x00,
+  0x00, 0x41, 0x7F, 0x40, 0x00, 0x00,
+  0x7C, 0x04, 0x78, 0x04, 0x78, 0x00,
+  0x7C, 0x08, 0x04, 0x04, 0x78, 0x00,
+  0x38, 0x44, 0x44, 0x44, 0x38, 0x00,
+  0xFC, 0x18, 0x24, 0x24, 0x18, 0x00,
+  0x18, 0x24, 0x24, 0x18, 0xFC, 0x00,
+  0x7C, 0x08, 0x04, 0x04, 0x08, 0x00,
+  0x48, 0x54, 0x54, 0x54, 0x24, 0x00,
+  0x04, 0x04, 0x3F, 0x44, 0x24, 0x00,
+  0x3C, 0x40, 0x40, 0x20, 0x7C, 0x00,
+  0x1C, 0x20, 0x40, 0x20, 0x1C, 0x00,
+  0x3C, 0x40, 0x30, 0x40, 0x3C, 0x00,
+  0x44, 0x28, 0x10, 0x28, 0x44, 0x00,
+  0x4C, 0x90, 0x90, 0x90, 0x7C, 0x00,
+  0x44, 0x64, 0x54, 0x4C, 0x44, 0x00,
+  0x00, 0x08, 0x36, 0x41, 0x00, 0x00,
+  0x00, 0x00, 0x77, 0x00, 0x00, 0x00,
+  0x00, 0x41, 0x36, 0x08, 0x00, 0x00,
+  0x02, 0x01, 0x02, 0x04, 0x02, 0x00,
+  0x3C, 0x26, 0x23, 0x26, 0x3C, 0x00,
+  0x03, 0x07, 0x1F, 0x7F, 0xFF, 0xFF,
+  0xFE, 0xF8, 0xF0, 0xC0, 0x20, 0xF8,
+  0xFE, 0xFF, 0xFE, 0x79, 0x27, 0x1F,
+  0x7F, 0xFF, 0xFF, 0xFE, 0xF8, 0xF0,
+  0xC0, 0x20, 0xF8, 0xFE, 0xFF, 0xFF,
+  0x7F, 0x3F, 0x3F, 0x7F, 0xFF, 0xFE,
+  0xF8, 0xF0, 0xC0, 0x00, 0x00, 0x00,
+  0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+  0xFF, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0xFF, 0x7F, 0x7F, 0x7F,
+  0xBF, 0xBF, 0xC0, 0xC0, 0xC0, 0xE0,
+  0xE0, 0xE0, 0xE0, 0xF0, 0xF0, 0xF0,
+  0xF8, 0x78, 0x78, 0x7C, 0x3C, 0x3C,
+  0xFE, 0xFE, 0xFE, 0xFF, 0xFF, 0xFF,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x80, 0x80,
+  0xBF, 0xBF, 0xDF, 0xDF, 0xEF, 0xEF,
+  0x00, 0x03, 0x07, 0x1F, 0x7F, 0xFF,
+  0xFF, 0xFF, 0xFE, 0xF8, 0xE0, 0xC0,
+  0xE0, 0xF8, 0xFE, 0xFF, 0xFF, 0xFF,
+  0x7F, 0x1F, 0x07, 0x03, 0x00, 0x00,
+  0xE0, 0xF0, 0xF0, 0xF0, 0xE0, 0xEC,
+  0xEE, 0xF7, 0xF3, 0x70, 0x20, 0x00,
+  0x7C, 0x7C, 0x7C, 0x7E, 0x00, 0x7E,
+  0x7E, 0x7E, 0x7F, 0x7F, 0x7F, 0x00,
+  0x00, 0x80, 0xC0, 0xE0, 0x7E, 0x5B,
+  0x4F, 0x5B, 0xFE, 0xC0, 0x00, 0x00,
+  0xC0, 0x00, 0xDC, 0xD7, 0xDE, 0xDE,
+  0xDE, 0xD7, 0xDC, 0x00, 0xC0, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0xC1, 0xF3,
+  0xCF, 0xBF, 0x7F, 0xFF, 0xFF, 0xFC,
+  0xFB, 0xE7, 0x81, 0x00, 0x00, 0x00,
+  0x00, 0x80, 0xE3, 0xCF, 0x3F, 0xFF,
+  0xFF, 0xFF, 0xFC, 0xFB, 0xE7, 0x81,
+  0x00, 0x00, 0x00, 0x00, 0x81, 0xE7,
+  0xFF, 0xFF, 0xFF, 0xFF, 0x3C, 0x00,
+  0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+  0xFF, 0xF8, 0xF8, 0xFC, 0x7C, 0x7E,
+  0x7E, 0x3E, 0xFE, 0xFF, 0xFF, 0xFF,
+  0xFF, 0xFF, 0xF7, 0xF7, 0xF7, 0xFB,
+  0xFB, 0x7D, 0x7D, 0x7D, 0xBE, 0xBE,
+  0xBE, 0xDF, 0xDF, 0xE0, 0xE0, 0x00,
+  0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+  0x00, 0xFC, 0xFC, 0x7C, 0x7E, 0x7E,
+  0x3E, 0x3E, 0x1F, 0x1F, 0x1F, 0x0F,
+  0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x81,
+  0xE7, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+  0xFF, 0xFF, 0xFF, 0xFF, 0xE7, 0x81,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x0F, 0x1F, 0x3F, 0x7F, 0x7F, 0x7F,
+  0x7F, 0x7F, 0x3F, 0x1E, 0x0C, 0x00,
+  0x1F, 0x1F, 0x1F, 0x3F, 0x00, 0x3F,
+  0x3F, 0x3F, 0x7F, 0x7F, 0x7F, 0x00,
+  0x30, 0x7B, 0x7F, 0x78, 0x30, 0x20,
+  0x20, 0x30, 0x78, 0x7F, 0x3B, 0x00,
+  0x03, 0x00, 0x0F, 0x7F, 0x0F, 0x0F,
+  0x0F, 0x7F, 0x0F, 0x00, 0x03, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x60, 0x70, 0x7C, 0x7F, 0x7F, 0x7F,
+  0x7F, 0x1F, 0x06, 0x01, 0x03, 0x0F,
+  0x3F, 0x7F, 0x7F, 0x7E, 0x7C, 0x7C,
+  0x7E, 0x7F, 0x7F, 0x7F, 0x1F, 0x06,
+  0x01, 0x07, 0x0F, 0x3F, 0x7F, 0x7F,
+  0x7E, 0x7C, 0x7C, 0x7E, 0x7F, 0x7F,
+  0x3F, 0x0F, 0x03, 0x00, 0x00, 0x00,
+  0x00, 0x7F, 0x7F, 0x7F, 0x7F, 0x7F,
+  0x7F, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x7F, 0x7F, 0x7F, 0x7F,
+  0x7F, 0x7F, 0x7D, 0x7D, 0x3D, 0x3E,
+  0x1E, 0x1F, 0x1F, 0x1F, 0x0F, 0x0F,
+  0x07, 0x07, 0x07, 0x03, 0x03, 0x00,
+  0x7F, 0x7F, 0x7F, 0x7F, 0x7F, 0x7F,
+  0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C,
+  0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x00,
+  0x7F, 0x7F, 0x7F, 0x7F, 0x7F, 0x7F,
+  0x00, 0x40, 0x70, 0x78, 0x7E, 0x7F,
+  0x7F, 0x7F, 0x3F, 0x0F, 0x03, 0x01,
+  0x03, 0x0F, 0x3F, 0x7F, 0x7F, 0x7F,
+  0x7E, 0x78, 0x70, 0x40, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+#endif // FONT5X7_H

keyboards/sol/common/knob_v2.c

@@ -0,0 +1,71 @@
+#include "knob_v2.h"
+
+bool knob_prev_a = false;
+static knob_report_t knob_report = {.dir = 0, .phase = 0};
+
+void knob_init(void) {
+    // I use pins D1 (ISR1) & D4 for a knob.
+
+    // Set pin mode for D4 as input.
+    DDRD &= ~(0UL << ENCODER_PIN_2);
+
+    // Enable internal pull-up for D4.
+    // This is done by "writing" 1 to a pin that has its mode set to input.
+    PORTD |= (1 << ENCODER_PIN_2);
+
+    // Enable interrupt for D1
+    // For more info on the below flags see this awesome section 11.1 (pages 89-90) here:
+    // https://cdn-shop.adafruit.com/datasheets/atmel-7766-8-bit-avr-atmega16u4-32u4_datasheet.pdf
+    // Set pin mode & pull-up.
+    DDRD &= ~(0UL << ENCODER_PIN_1);
+    PORTD |= (1UL << ENCODER_PIN_1);
+
+    // INT:    33221100
+    EICRA |= 0b00010000;  // 0b01 - any edge
+    // INT:     6  3210
+    EIMSK |= 0b00000100;
+}
+
+ISR(ENCODER_INT) {
+    bool a = PIND & (1 << ENCODER_PIN_1);
+
+    if (knob_prev_a != a) {
+        // "A" channel has REALLY changed.
+        knob_report.phase = a;
+        knob_prev_a = a;
+        bool b = PIND & (1 << ENCODER_PIN_2);
+        if (a == b) {
+            // Halfway through CCW rotation (A == B)
+            //
+            //         +---YOU ARE HERE (A=1, B=1)
+            //         |     +---OR HERE (A=0, B=0)
+            //         |     |
+            //         v     v
+            // A: _____/^^^^^\__
+            // B: __/^^^^^\_____
+            knob_report.dir++;
+        } else {
+            // Halfway through CW rotation (A != B)
+            //
+            //         +---YOU ARE HERE (A=1, B=0)
+            //         |     +---OR HERE (A=0, B=1)
+            //         |     |
+            //         v     v
+            // A: _____/^^^^^\_____
+            // B: ________/^^^^^\__
+            knob_report.dir--;
+        }
+    }
+}
+
+knob_report_t knob_report_read(void) {
+    // Return knob report.
+    return knob_report;
+}
+
+void knob_report_reset(void) {
+    // Call this ASAP once you've processed the previous knob report.
+    // TODO: This should probably be called within `knob_report_read`.
+    knob_report.dir = 0;
+    knob_report.phase = 0;
+}

keyboards/sol/common/knob_v2.h

@@ -0,0 +1,28 @@
+// Rotary knob implementation - Version 2.
+// Uses 2 digital pins - D2 (via interrupt) & D6.
+// #include "rev1.h"
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <stdbool.h>
+
+#ifndef ENCODER_PIN_1
+  #define ENCODER_PIN_1 PD2
+#endif
+#ifndef ENCODER_PIN_2
+  #define ENCODER_PIN_2 PD6
+#endif
+#ifndef ENCODER_INT
+  #define ENCODER_INT   INT2_vect
+#endif
+
+typedef struct knob_report_t {
+    int8_t dir;  // Contains number of rotations that happened
+    int8_t phase;  // Contains 0 if last rotation happened on 90 degrees, 1 if on 270
+}  knob_report_t;
+
+void knob_init(void);
+knob_report_t knob_report_read(void);
+void knob_report_reset(void);
+
+bool knob_prev_a;
+int8_t knob_dir;

keyboards/sol/common/ssd1306.c

@@ -0,0 +1,329 @@
+#ifdef SSD1306OLED
+
+#include "ssd1306.h"
+#include "i2c.h"
+#include <string.h>
+#include "print.h"
+#ifndef LOCAL_GLCDFONT
+#include "common/glcdfont.c"
+#else
+#include <helixfont.h>
+#endif
+#ifdef ADAFRUIT_BLE_ENABLE
+#include "adafruit_ble.h"
+#endif
+#ifdef PROTOCOL_LUFA
+#include "lufa.h"
+#endif
+#include "sendchar.h"
+#include "timer.h"
+
+// Set this to 1 to help diagnose early startup problems
+// when testing power-on with ble.  Turn it off otherwise,
+// as the latency of printing most of the debug info messes
+// with the matrix scan, causing keys to drop.
+#define DEBUG_TO_SCREEN 0
+
+//static uint16_t last_battery_update;
+//static uint32_t vbat;
+//#define BatteryUpdateInterval 10000 /* milliseconds */
+#define ScreenOffInterval 300000 /* milliseconds */
+#if DEBUG_TO_SCREEN
+static uint8_t displaying;
+#endif
+static uint16_t last_flush;
+
+// Write command sequence.
+// Returns true on success.
+static inline bool _send_cmd1(uint8_t cmd) {
+  bool res = false;
+
+  if (i2c_start_write(SSD1306_ADDRESS)) {
+    xprintf("failed to start write to %d\n", SSD1306_ADDRESS);
+    goto done;
+  }
+
+  if (i2c_master_write(0x0 /* command byte follows */)) {
+    print("failed to write control byte\n");
+
+    goto done;
+  }
+
+  if (i2c_master_write(cmd)) {
+    xprintf("failed to write command %d\n", cmd);
+    goto done;
+  }
+  res = true;
+done:
+  i2c_master_stop();
+  return res;
+}
+
+// Write 2-byte command sequence.
+// Returns true on success
+static inline bool _send_cmd2(uint8_t cmd, uint8_t opr) {
+  if (!_send_cmd1(cmd)) {
+    return false;
+  }
+  return _send_cmd1(opr);
+}
+
+// Write 3-byte command sequence.
+// Returns true on success
+static inline bool _send_cmd3(uint8_t cmd, uint8_t opr1, uint8_t opr2) {
+  if (!_send_cmd1(cmd)) {
+    return false;
+  }
+  if (!_send_cmd1(opr1)) {
+    return false;
+  }
+  return _send_cmd1(opr2);
+}
+
+#define send_cmd1(c) if (!_send_cmd1(c)) {goto done;}
+#define send_cmd2(c,o) if (!_send_cmd2(c,o)) {goto done;}
+#define send_cmd3(c,o1,o2) if (!_send_cmd3(c,o1,o2)) {goto done;}
+
+static void clear_display(void) {
+  matrix_clear(&display);
+
+  // Clear all of the display bits (there can be random noise
+  // in the RAM on startup)
+  send_cmd3(PageAddr, 0, (DisplayHeight / 8) - 1);
+  send_cmd3(ColumnAddr, 0, DisplayWidth - 1);
+
+  if (i2c_start_write(SSD1306_ADDRESS)) {
+    goto done;
+  }
+  if (i2c_master_write(0x40)) {
+    // Data mode
+    goto done;
+  }
+  for (uint8_t row = 0; row < MatrixRows; ++row) {
+    for (uint8_t col = 0; col < DisplayWidth; ++col) {
+      i2c_master_write(0);
+    }
+  }
+
+  display.dirty = false;
+
+done:
+  i2c_master_stop();
+}
+
+#if DEBUG_TO_SCREEN
+#undef sendchar
+static int8_t capture_sendchar(uint8_t c) {
+  sendchar(c);
+  iota_gfx_write_char(c);
+
+  if (!displaying) {
+    iota_gfx_flush();
+  }
+  return 0;
+}
+#endif
+
+bool iota_gfx_init(bool rotate) {
+  bool success = false;
+
+  i2c_master_init();
+  send_cmd1(DisplayOff);
+  send_cmd2(SetDisplayClockDiv, 0x80);
+  send_cmd2(SetMultiPlex, DisplayHeight - 1);
+
+  send_cmd2(SetDisplayOffset, 0);
+
+
+  send_cmd1(SetStartLine | 0x0);
+  send_cmd2(SetChargePump, 0x14 /* Enable */);
+  send_cmd2(SetMemoryMode, 0 /* horizontal addressing */);
+
+  if(rotate){
+    // the following Flip the display orientation 180 degrees
+    send_cmd1(SegRemap);
+    send_cmd1(ComScanInc);
+  }else{
+    // Flips the display orientation 0 degrees
+    send_cmd1(SegRemap | 0x1);
+    send_cmd1(ComScanDec);
+  }
+
+  send_cmd2(SetComPins, 0x2);
+  send_cmd2(SetContrast, 0x8f);
+  send_cmd2(SetPreCharge, 0xf1);
+  send_cmd2(SetVComDetect, 0x40);
+  send_cmd1(DisplayAllOnResume);
+  send_cmd1(NormalDisplay);
+  send_cmd1(DeActivateScroll);
+  send_cmd1(DisplayOn);
+
+  send_cmd2(SetContrast, 0); // Dim
+
+  clear_display();
+
+  success = true;
+
+  iota_gfx_flush();
+
+#if DEBUG_TO_SCREEN
+  print_set_sendchar(capture_sendchar);
+#endif
+
+done:
+  return success;
+}
+
+bool iota_gfx_off(void) {
+  bool success = false;
+
+  send_cmd1(DisplayOff);
+  success = true;
+
+done:
+  return success;
+}
+
+bool iota_gfx_on(void) {
+  bool success = false;
+
+  send_cmd1(DisplayOn);
+  success = true;
+
+done:
+  return success;
+}
+
+void matrix_write_char_inner(struct CharacterMatrix *matrix, uint8_t c) {
+  *matrix->cursor = c;
+  ++matrix->cursor;
+
+  if (matrix->cursor - &matrix->display[0][0] == sizeof(matrix->display)) {
+    // We went off the end; scroll the display upwards by one line
+    memmove(&matrix->display[0], &matrix->display[1],
+            MatrixCols * (MatrixRows - 1));
+    matrix->cursor = &matrix->display[MatrixRows - 1][0];
+    memset(matrix->cursor, ' ', MatrixCols);
+  }
+}
+
+void matrix_write_char(struct CharacterMatrix *matrix, uint8_t c) {
+  matrix->dirty = true;
+
+  if (c == '\n') {
+    // Clear to end of line from the cursor and then move to the
+    // start of the next line
+    uint8_t cursor_col = (matrix->cursor - &matrix->display[0][0]) % MatrixCols;
+
+    while (cursor_col++ < MatrixCols) {
+      matrix_write_char_inner(matrix, ' ');
+    }
+    return;
+  }
+
+  matrix_write_char_inner(matrix, c);
+}
+
+void iota_gfx_write_char(uint8_t c) {
+  matrix_write_char(&display, c);
+}
+
+void matrix_write(struct CharacterMatrix *matrix, const char *data) {
+  const char *end = data + strlen(data);
+  while (data < end) {
+    matrix_write_char(matrix, *data);
+    ++data;
+  }
+}
+
+void iota_gfx_write(const char *data) {
+  matrix_write(&display, data);
+}
+
+void matrix_write_P(struct CharacterMatrix *matrix, const char *data) {
+  while (true) {
+    uint8_t c = pgm_read_byte(data);
+    if (c == 0) {
+      return;
+    }
+    matrix_write_char(matrix, c);
+    ++data;
+  }
+}
+
+void iota_gfx_write_P(const char *data) {
+  matrix_write_P(&display, data);
+}
+
+void matrix_clear(struct CharacterMatrix *matrix) {
+  memset(matrix->display, ' ', sizeof(matrix->display));
+  matrix->cursor = &matrix->display[0][0];
+  matrix->dirty = true;
+}
+
+void iota_gfx_clear_screen(void) {
+  matrix_clear(&display);
+}
+
+void matrix_render(struct CharacterMatrix *matrix) {
+  last_flush = timer_read();
+  iota_gfx_on();
+#if DEBUG_TO_SCREEN
+  ++displaying;
+#endif
+
+  // Move to the home position
+  send_cmd3(PageAddr, 0, MatrixRows - 1);
+  send_cmd3(ColumnAddr, 0, (MatrixCols * FontWidth) - 1);
+
+  if (i2c_start_write(SSD1306_ADDRESS)) {
+    goto done;
+  }
+  if (i2c_master_write(0x40)) {
+    // Data mode
+    goto done;
+  }
+
+  for (uint8_t row = 0; row < MatrixRows; ++row) {
+    for (uint8_t col = 0; col < MatrixCols; ++col) {
+      const uint8_t *glyph = font + (matrix->display[row][col] * FontWidth);
+
+      for (uint8_t glyphCol = 0; glyphCol < FontWidth; ++glyphCol) {
+        uint8_t colBits = pgm_read_byte(glyph + glyphCol);
+        i2c_master_write(colBits);
+      }
+
+      // 1 column of space between chars (it's not included in the glyph)
+      //i2c_master_write(0);
+    }
+  }
+
+  matrix->dirty = false;
+
+done:
+  i2c_master_stop();
+#if DEBUG_TO_SCREEN
+  --displaying;
+#endif
+}
+
+void iota_gfx_flush(void) {
+  matrix_render(&display);
+}
+
+__attribute__ ((weak))
+void iota_gfx_task_user(void) {
+}
+
+void iota_gfx_task(void) {
+  iota_gfx_task_user();
+
+  if (display.dirty) {
+    iota_gfx_flush();
+  }
+
+  if (timer_elapsed(last_flush) > ScreenOffInterval) {
+    iota_gfx_off();
+  }
+}
+#endif

keyboards/sol/common/ssd1306.h

@@ -0,0 +1,92 @@
+#ifndef SSD1306_H
+#define SSD1306_H
+
+#include <stdbool.h>
+#include <stdio.h>
+#include "pincontrol.h"
+
+enum ssd1306_cmds {
+  DisplayOff = 0xAE,
+  DisplayOn = 0xAF,
+
+  SetContrast = 0x81,
+  DisplayAllOnResume = 0xA4,
+
+  DisplayAllOn = 0xA5,
+  NormalDisplay = 0xA6,
+  InvertDisplay = 0xA7,
+  SetDisplayOffset = 0xD3,
+  SetComPins = 0xda,
+  SetVComDetect = 0xdb,
+  SetDisplayClockDiv = 0xD5,
+  SetPreCharge = 0xd9,
+  SetMultiPlex = 0xa8,
+  SetLowColumn = 0x00,
+  SetHighColumn = 0x10,
+  SetStartLine = 0x40,
+
+  SetMemoryMode = 0x20,
+  ColumnAddr = 0x21,
+  PageAddr = 0x22,
+
+  ComScanInc = 0xc0,
+  ComScanDec = 0xc8,
+  SegRemap = 0xa0,
+  SetChargePump = 0x8d,
+  ExternalVcc = 0x01,
+  SwitchCapVcc = 0x02,
+
+  ActivateScroll = 0x2f,
+  DeActivateScroll = 0x2e,
+  SetVerticalScrollArea = 0xa3,
+  RightHorizontalScroll = 0x26,
+  LeftHorizontalScroll = 0x27,
+  VerticalAndRightHorizontalScroll = 0x29,
+  VerticalAndLeftHorizontalScroll = 0x2a,
+};
+
+// Controls the SSD1306 128x32 OLED display via i2c
+
+#ifndef SSD1306_ADDRESS
+#define SSD1306_ADDRESS 0x3C
+#endif
+
+#define DisplayHeight 32
+#define DisplayWidth 128
+
+#define FontHeight 8
+#define FontWidth 6
+
+#define MatrixRows (DisplayHeight / FontHeight)
+#define MatrixCols (DisplayWidth / FontWidth)
+
+struct CharacterMatrix {
+  uint8_t display[MatrixRows][MatrixCols];
+  uint8_t *cursor;
+  bool dirty;
+};
+
+struct CharacterMatrix display;
+
+bool iota_gfx_init(bool rotate);
+void iota_gfx_task(void);
+bool iota_gfx_off(void);
+bool iota_gfx_on(void);
+void iota_gfx_flush(void);
+void iota_gfx_write_char(uint8_t c);
+void iota_gfx_write(const char *data);
+void iota_gfx_write_P(const char *data);
+void iota_gfx_clear_screen(void);
+
+void iota_gfx_task_user(void);
+
+void matrix_clear(struct CharacterMatrix *matrix);
+void matrix_write_char_inner(struct CharacterMatrix *matrix, uint8_t c);
+void matrix_write_char(struct CharacterMatrix *matrix, uint8_t c);
+void matrix_write(struct CharacterMatrix *matrix, const char *data);
+void matrix_write_P(struct CharacterMatrix *matrix, const char *data);
+void matrix_render(struct CharacterMatrix *matrix);
+
+
+
+#endif

keyboards/sol/config.h

@@ -0,0 +1,22 @@
+/*
+Copyright 2012 Jun Wako <wakojun@gmail.com>
+Copyright 2015 Jack Humbert
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#pragma once
+
+#include "config_common.h"
+

keyboards/sol/i2c.c

@@ -0,0 +1,162 @@
+#include <util/twi.h>
+#include <avr/io.h>
+#include <stdlib.h>
+#include <avr/interrupt.h>
+#include <util/twi.h>
+#include <stdbool.h>
+#include "i2c.h"
+
+#ifdef USE_I2C
+
+// Limits the amount of we wait for any one i2c transaction.
+// Since were running SCL line 100kHz (=> 10μs/bit), and each transactions is
+// 9 bits, a single transaction will take around 90μs to complete.
+//
+// (F_CPU/SCL_CLOCK)  =>  # of μC cycles to transfer a bit
+// poll loop takes at least 8 clock cycles to execute
+#define I2C_LOOP_TIMEOUT (9+1)*(F_CPU/SCL_CLOCK)/8
+
+#define BUFFER_POS_INC() (slave_buffer_pos = (slave_buffer_pos+1)%SLAVE_BUFFER_SIZE)
+
+volatile uint8_t i2c_slave_buffer[SLAVE_BUFFER_SIZE];
+
+static volatile uint8_t slave_buffer_pos;
+static volatile bool slave_has_register_set = false;
+
+// Wait for an i2c operation to finish
+inline static
+void i2c_delay(void) {
+  uint16_t lim = 0;
+  while(!(TWCR & (1<<TWINT)) && lim < I2C_LOOP_TIMEOUT)
+    lim++;
+
+  // easier way, but will wait slightly longer
+  // _delay_us(100);
+}
+
+// Setup twi to run at 100kHz or 400kHz (see ./i2c.h SCL_CLOCK)
+void i2c_master_init(void) {
+  // no prescaler
+  TWSR = 0;
+  // Set TWI clock frequency to SCL_CLOCK. Need TWBR>10.
+  // Check datasheets for more info.
+  TWBR = ((F_CPU/SCL_CLOCK)-16)/2;
+}
+
+// Start a transaction with the given i2c slave address. The direction of the
+// transfer is set with I2C_READ and I2C_WRITE.
+// returns: 0 => success
+//          1 => error
+uint8_t i2c_master_start(uint8_t address) {
+  TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTA);
+
+  i2c_delay();
+
+  // check that we started successfully
+  if ( (TW_STATUS != TW_START) && (TW_STATUS != TW_REP_START))
+    return 1;
+
+  TWDR = address;
+  TWCR = (1<<TWINT) | (1<<TWEN);
+
+  i2c_delay();
+
+  if ( (TW_STATUS != TW_MT_SLA_ACK) && (TW_STATUS != TW_MR_SLA_ACK) )
+    return 1; // slave did not acknowledge
+  else
+    return 0; // success
+}
+
+
+// Finish the i2c transaction.
+void i2c_master_stop(void) {
+  TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
+
+  uint16_t lim = 0;
+  while(!(TWCR & (1<<TWSTO)) && lim < I2C_LOOP_TIMEOUT)
+    lim++;
+}
+
+// Write one byte to the i2c slave.
+// returns 0 => slave ACK
+//         1 => slave NACK
+uint8_t i2c_master_write(uint8_t data) {
+  TWDR = data;
+  TWCR = (1<<TWINT) | (1<<TWEN);
+
+  i2c_delay();
+
+  // check if the slave acknowledged us
+  return (TW_STATUS == TW_MT_DATA_ACK) ? 0 : 1;
+}
+
+// Read one byte from the i2c slave. If ack=1 the slave is acknowledged,
+// if ack=0 the acknowledge bit is not set.
+// returns: byte read from i2c device
+uint8_t i2c_master_read(int ack) {
+  TWCR = (1<<TWINT) | (1<<TWEN) | (ack<<TWEA);
+
+  i2c_delay();
+  return TWDR;
+}
+
+void i2c_reset_state(void) {
+  TWCR = 0;
+}
+
+void i2c_slave_init(uint8_t address) {
+  TWAR = address << 0; // slave i2c address
+  // TWEN  - twi enable
+  // TWEA  - enable address acknowledgement
+  // TWINT - twi interrupt flag
+  // TWIE  - enable the twi interrupt
+  TWCR = (1<<TWIE) | (1<<TWEA) | (1<<TWINT) | (1<<TWEN);
+}
+
+ISR(TWI_vect);
+
+ISR(TWI_vect) {
+  uint8_t ack = 1;
+  switch(TW_STATUS) {
+    case TW_SR_SLA_ACK:
+      // this device has been addressed as a slave receiver
+      slave_has_register_set = false;
+      break;
+
+    case TW_SR_DATA_ACK:
+      // this device has received data as a slave receiver
+      // The first byte that we receive in this transaction sets the location
+      // of the read/write location of the slaves memory that it exposes over
+      // i2c.  After that, bytes will be written at slave_buffer_pos, incrementing
+      // slave_buffer_pos after each write.
+      if(!slave_has_register_set) {
+        slave_buffer_pos = TWDR;
+        // don't acknowledge the master if this memory loctaion is out of bounds
+        if ( slave_buffer_pos >= SLAVE_BUFFER_SIZE ) {
+          ack = 0;
+          slave_buffer_pos = 0;
+        }
+        slave_has_register_set = true;
+      } else {
+        i2c_slave_buffer[slave_buffer_pos] = TWDR;
+        BUFFER_POS_INC();
+      }
+      break;
+
+    case TW_ST_SLA_ACK:
+    case TW_ST_DATA_ACK:
+      // master has addressed this device as a slave transmitter and is
+      // requesting data.
+      TWDR = i2c_slave_buffer[slave_buffer_pos];
+      BUFFER_POS_INC();
+      break;
+
+    case TW_BUS_ERROR: // something went wrong, reset twi state
+      TWCR = 0;
+    default:
+      break;
+  }
+  // Reset everything, so we are ready for the next TWI interrupt
+  TWCR |= (1<<TWIE) | (1<<TWINT) | (ack<<TWEA) | (1<<TWEN);
+}
+#endif

keyboards/sol/i2c.h

@@ -0,0 +1,49 @@
+#ifndef I2C_H
+#define I2C_H
+
+#include <stdint.h>
+
+#ifndef F_CPU
+#define F_CPU 16000000UL
+#endif
+
+#define I2C_READ 1
+#define I2C_WRITE 0
+
+#define I2C_ACK 1
+#define I2C_NACK 0
+
+#define SLAVE_BUFFER_SIZE 0x10
+
+// i2c SCL clock frequency 400kHz
+#define SCL_CLOCK  400000L
+
+extern volatile uint8_t i2c_slave_buffer[SLAVE_BUFFER_SIZE];
+
+void i2c_master_init(void);
+uint8_t i2c_master_start(uint8_t address);
+void i2c_master_stop(void);
+uint8_t i2c_master_write(uint8_t data);
+uint8_t i2c_master_read(int);
+void i2c_reset_state(void);
+void i2c_slave_init(uint8_t address);
+
+
+static inline unsigned char i2c_start_read(unsigned char addr) {
+  return i2c_master_start((addr << 1) | I2C_READ);
+}
+
+static inline unsigned char i2c_start_write(unsigned char addr) {
+  return i2c_master_start((addr << 1) | I2C_WRITE);
+}
+
+// from SSD1306 scrips
+extern unsigned char i2c_rep_start(unsigned char addr);
+extern void i2c_start_wait(unsigned char addr);
+extern unsigned char i2c_readAck(void);
+extern unsigned char i2c_readNak(void);
+extern unsigned char i2c_read(unsigned char ack);
+
+#define i2c_read(ack)  (ack) ? i2c_readAck() : i2c_readNak();
+
+#endif

keyboards/sol/keymaps/brianweyer/config.h

@@ -0,0 +1,27 @@
+/*
+This is the c configuration file for the keymap
+
+Copyright 2012 Jun Wako <wakojun@gmail.com>
+Copyright 2015 Jack Humbert
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#pragma once
+
+#define SSD1306OLED
+
+
+// place overrides here
+

keyboards/sol/keymaps/brianweyer/keymap.c

@@ -0,0 +1,291 @@
+#include QMK_KEYBOARD_H
+#ifdef PROTOCOL_LUFA
+#include "lufa.h"
+#include "split_util.h"
+#endif
+#ifdef SSD1306OLED
+  #include "common/ssd1306.h"
+#endif
+
+extern keymap_config_t keymap_config;
+
+#ifdef RGBLIGHT_ENABLE
+//Following line allows macro to read current RGB settings
+extern rgblight_config_t rgblight_config;
+#endif
+
+extern uint8_t is_master;
+
+// Each layer gets a name for readability, which is then used in the keymap matrix below.
+// The underscores don't mean anything - you can have a layer called STUFF or any other name.
+// Layer names don't all need to be of the same length, obviously, and you can also skip them
+// entirely and just use numbers.
+enum layer_number {
+    _QWERTY = 0,
+    _FN,
+    _ADJ
+};
+
+enum custom_keycodes {
+  QWERTY = SAFE_RANGE,
+  FN,
+  ADJ,
+  RGBRST
+};
+
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+  /* QWERTY
+   * ,------------------------------------------------.  ,------------------------------------------------.
+   * |   `  |   1  |   2  |   3  |   4  |   5  |   -  |  |   =  |   6  |   7  |   8  |   9  |   0  | Bspc |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |  Tab |   Q  |   W  |   E  |   R  |   T  |   [  |  |   ]  |   Y  |   U  |   I  |   O  |   P  |   \  |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |  Esc |   A  |   S  |   D  |   F  |   G  |      |  |      |   H  |   J  |   K  |   L  |   ;  |   '  |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * | Shift|   Z  |   X  |   C  |   V  |   B  |      |  |      |   N  |   M  |   ,  |   .  |   /  | Shift|
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * | Ctrl |  Alt |  FN  | LGui |  RGB |  Spc |  Del |  | Bspc |  Spc |  Adj | LGui |  FN  |  Alt | Ctrl |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   *                                    |  Spc |  Ent |  |  Ent |  Spc |
+   *                                    `-------------'  `-------------'
+   */
+  [_QWERTY] = LAYOUT_kc( \
+  //,--------+--------+--------+--------+--------+--------+--+--------+.   ,--------+--+--------+--------+--------+--------+--------+--------+
+          GRV,       1,       2,       3,       4,       5,       MINS,          EQL,          6,       7,       8,       9,       0,    BSPC,
+  //|--------+--------+--------+--------+--------+--------+--+--------|    |--------+--+--------+--------+--------+--------+--------+--------|
+          TAB,       Q,       W,       E,       R,       T,       LBRC,         RBRC,          Y,       U,       I,       O,       P,    BSLS,
+  //|--------+--------+--------+--------+--------+--------+--+--------|    |--------+--+--------+--------+--------+--------+--------+--------|
+          ESC,       A,       S,       D,       F,       G,    _______,      _______,          H,       J,       K,       L,    SCLN,    QUOT,
+  //|--------+--------+--------+--------+--------+--------+--+--------|    |--------+--+--------+--------+--------+--------+--------+--------|
+         LSPO,       Z,       X,       C,       V,       B,    _______,      _______,          N,       M,    COMM,     DOT,    SLSH,    RSPC,
+  //|--------+--------+--------+--------+--------+--------+--+--------|    |--------+--+--------+--------+--------+--------+--------+--------|
+         LCTL,    LALT,      FN,    LGUI, RGB_MOD,        SPC,     DEL,         BSPC,        SPC,     ADJ,    LGUI,      FN,    LALT,    LCTL,
+  //|--------+--------+--------+--------+--------+--+--------+--------|    |--------+--+--------+--------+--------+--------+--------+--------|
+                           VOLD,    VOLU,                 SPC,     ENT,          ENT,        SPC,             DOWN,    UP
+  //                      Rotary Left               |--------+--------|    |--------+-----------+              Rotary Right
+      ),
+
+  /* FN
+   * ,------------------------------------------------.  ,------------------------------------------------.
+   * |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |      |  |      |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      |      |      |  Up  |      |      |      |  |      |      |      |      |      |      |      |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      |      | Left | Down | Right|      |      |  |      | Play | Next | Mute | V-Up |V-Down|      |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      |      |      |      |      |      |      |  |      |      |      |      |      |      |      |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      |      |      |      |      |      |      |  |      |      |      |      |      |      |      |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   *                                    |      |      |  |      |      |
+   *                                    `-------------'  `-------------'
+   */
+  [_FN] = LAYOUT_kc( \
+  //,--------+--------+--------+--------+--------+--------+--+--------+.   ,--------+--+--------+--------+--------+--------+--------+--------+
+           F1,      F2,      F3,      F4,      F5,      F6,    _______,      _______,         F7,      F8,      F9,     F10,     F11,     F12,
+  //|--------+--------+--------+--------+--------+--------+--+--------|    |--------+--+--------+--------+--------+--------+--------+--------|
+      _______, _______, _______,      UP, _______, _______,    _______,      _______,    _______, _______, _______, _______, _______, _______,
+  //|--------+--------+--------+--------+--------+--------+--+--------|    |--------+--+--------+--------+--------+--------+--------+--------|
+      _______, _______,    LEFT,    DOWN,    RGHT, _______,    _______,      _______,       MPLY,    MNXT,    MUTE,    VOLD,    VOLU, _______,
+  //|--------+--------+--------+--------+--------+--------+--+--------|    |--------+--+--------+--------+--------+--------+--------+--------|
+      _______, _______, _______, _______, _______, _______,    _______,      _______,    _______, _______, _______, _______, _______, _______,
+  //|--------+--------+--------+--------+--------+--------+--+--------|    |--------+--+--------+--------+--------+--------+--------+--------|
+      _______, _______, _______, _______, _______,    _______, _______,      _______,    _______, _______, _______, _______, _______, _______,
+  //|--------+--------+--------+--------+--------+--+--------+--------|    |--------+--+--------+--------+--------+--------+--------+--------|
+                           VOLD,    VOLU,             _______, _______,      _______,    _______,               UP,    DOWN
+  //                      Rotary Left               |--------+--------|    |--------+-----------+              Rotary Right
+      ),
+
+  /* ADJ
+   * ,------------------------------------------------.  ,------------------------------------------------.
+   * |      |      |      |      |      |      |      |  |      |      |      |      |      |      |      |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      | Sat+ | Val+ | Hue+ |Speed+|Toggle|      |  |      |      |      |      |      |      |      |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      | Sat- | Val- | Hue- |Speed-|Reset |      |  |      |      |QWERTY| COLE |      |      |      |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      |      |      |      |      |      |      |  |      |      |      |      |      |      |      |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      |      |      |      |      |      |      |  |      |      |      |      |      |      |      |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   *                                    |      |      |  |      |      |
+   *                                    `-------------'  `-------------'
+   */
+
+  [_ADJ] =  LAYOUT( \
+  //,--------+--------+--------+--------+--------+--------+--+--------+.   ,--------+--+--------+--------+--------+--------+--------+--------+
+        RESET, _______, _______, _______, _______, _______,    _______,      _______,    _______, _______, _______, _______, _______,   RESET, \
+  //|--------+--------+--------+--------+--------+--------+--+--------|    |--------+--+--------+--------+--------+--------+--------+--------|
+      _______, RGB_SAI, RGB_VAI, RGB_HUI, RGB_SPI, RGB_TOG,    _______,      _______,    _______, _______, _______, _______, _______, _______, \
+  //|--------+--------+--------+--------+--------+--------+--+--------|    |--------+--+--------+--------+--------+--------+--------+--------|
+      _______, RGB_SAD, RGB_VAD, RGB_HUD, RGB_SPD,  RGBRST,    _______,      _______,    _______, _______, _______, _______, _______, _______, \
+  //|--------+--------+--------+--------+--------+--------+--+--------|    |--------+--+--------+--------+--------+--------+--------+--------|
+      _______, _______, _______, _______, _______, _______,    _______,      _______,    _______, _______, _______, _______, _______, _______, \
+  //|--------+--------+--------+--------+--------+--------+--+--------|    |--------+--+--------+--------+--------+--------+--------+--------|
+      _______, _______, _______, _______, _______,    _______, _______,      _______, _______,    _______, _______, _______, _______, _______, \
+  //|--------+--------+--------+--------+--------+--+--------+--------|    |--------+--------+--+--------+--------+--------+--------+--------|
+                        _______, _______,             _______, _______,      _______, _______,             _______, _______ \
+  //                      Rotary Left               |--------+--------|    |--------+--------+              Rotary Right
+      )
+};
+
+
+// define variables for reactive RGB
+bool TOG_STATUS = false;
+int RGB_current_mode;
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+
+  switch (keycode) {
+    case QWERTY:
+      if (record->event.pressed) {
+        set_single_persistent_default_layer(_QWERTY);
+      }
+      return false;
+      break;
+    case FN:
+      if (record->event.pressed) {
+        layer_on(_FN);
+      } else {
+        layer_off(_FN);
+      }
+      return false;
+      break;
+    case ADJ:
+        if (record->event.pressed) {
+          layer_on(_ADJ);
+        } else {
+          layer_off(_ADJ);
+        }
+        return false;
+        break;
+      //led operations - RGB mode change now updates the RGB_current_mode to allow the right RGB mode to be set after reactive keys are released
+    case RGBRST:
+      #ifdef RGBLIGHT_ENABLE
+        if (record->event.pressed) {
+          eeconfig_update_rgblight_default();
+          rgblight_enable();
+          RGB_current_mode = rgblight_config.mode;
+        }
+      #endif
+      break;
+  }
+  return true;
+}
+
+void matrix_init_user(void) {
+    #ifdef RGBLIGHT_ENABLE
+      RGB_current_mode = rgblight_config.mode;
+    #endif
+    //SSD1306 OLED init, make sure to add #define SSD1306OLED in config.h
+    #ifdef SSD1306OLED
+        iota_gfx_init(!has_usb());   // turns on the display
+    #endif
+}
+
+void matrix_scan_user(void) {
+  #ifdef SSD1306OLED
+    // led_test_init();
+    iota_gfx_task();  // this is what updates the display continuously
+  #endif
+}
+
+
+//SSD1306 OLED update loop, make sure to add #define SSD1306OLED in config.h
+#ifdef SSD1306OLED
+
+// hook point for 'led_test' keymap
+//   'default' keymap's led_test_init() is empty function, do nothing
+//   'led_test' keymap's led_test_init() force rgblight_mode_noeeprom(35);
+__attribute__ ((weak))
+void led_test_init(void) {}
+
+void matrix_update(struct CharacterMatrix *dest,
+                          const struct CharacterMatrix *source) {
+  if (memcmp(dest->display, source->display, sizeof(dest->display))) {
+    memcpy(dest->display, source->display, sizeof(dest->display));
+    dest->dirty = true;
+  }
+}
+
+//assign the right code to your layers for OLED display
+#define L_BASE 0
+#define L_FN (1<<_FN)
+#define L_ADJ (1<<_ADJ)
+#define L_ADJ_TRI (L_ADJ|L_FN)
+
+static void render_logo(struct CharacterMatrix *matrix) {
+
+  static char logo[]={
+    0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f,0x90,0x91,0x92,0x93,0x94,
+    0xa0,0xa1,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,0xa8,0xa9,0xaa,0xab,0xac,0xad,0xae,0xaf,0xb0,0xb1,0xb2,0xb3,0xb4,
+    0xc0,0xc1,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xcb,0xcc,0xcd,0xce,0xcf,0xd0,0xd1,0xd2,0xd3,0xd4,
+    0};
+  matrix_write(matrix, logo);
+}
+
+
+
+void render_status(struct CharacterMatrix *matrix) {
+
+  // Render to mode icon
+  static char logo[][2][3]={{{0x95,0x96,0},{0xb5,0xb6,0}},{{0x97,0x98,0},{0xb7,0xb8,0}}};
+  if(keymap_config.swap_lalt_lgui==false){
+    matrix_write(matrix, logo[0][0]);
+    matrix_write_P(matrix, PSTR("\n"));
+    matrix_write(matrix, logo[0][1]);
+  }else{
+    matrix_write(matrix, logo[1][0]);
+    matrix_write_P(matrix, PSTR("\n"));
+    matrix_write(matrix, logo[1][1]);
+  }
+
+  // Define layers here, Have not worked out how to have text displayed for each layer. Copy down the number you see and add a case for it below
+  char buf[40];
+  snprintf(buf,sizeof(buf), "Undef-%ld", layer_state);
+  matrix_write_P(matrix, PSTR("\nLayer: "));
+    switch (layer_state) {
+        case L_BASE:
+           matrix_write_P(matrix, PSTR("Laser"));
+           break;
+        case L_FN:
+           matrix_write_P(matrix, PSTR("Function"));
+           break;
+        case L_ADJ:
+        case L_ADJ_TRI:
+           matrix_write_P(matrix, PSTR("Adjustment"));
+           break;
+        default:
+           matrix_write(matrix, buf);
+    }
+
+  // Host Keyboard LED Status
+  char led[40];
+    snprintf(led, sizeof(led), "\n%s  %s  %s",
+            (host_keyboard_leds() & (1<<USB_LED_NUM_LOCK)) ? "NUMLOCK" : "       ",
+            (host_keyboard_leds() & (1<<USB_LED_CAPS_LOCK)) ? "CAPS" : "    ",
+            (host_keyboard_leds() & (1<<USB_LED_SCROLL_LOCK)) ? "SCLK" : "    ");
+  matrix_write(matrix, led);
+}
+
+
+void iota_gfx_task_user(void) {
+  struct CharacterMatrix matrix;
+
+#if DEBUG_TO_SCREEN
+  if (debug_enable) {
+    return;
+  }
+#endif
+
+  matrix_clear(&matrix);
+  if(is_master){
+    render_status(&matrix);
+  }else{
+    render_logo(&matrix);
+  }
+  matrix_update(&display, &matrix);
+}
+
+#endif

keyboards/sol/keymaps/brianweyer/rules.mk

@@ -0,0 +1,46 @@
+# Build Options
+#   change to "no" to disable the options, or define them in the Makefile in
+#   the appropriate keymap folder that will get included automatically
+#
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
+MOUSEKEY_ENABLE = no        # Mouse keys(+4700)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
+CONSOLE_ENABLE = no        # Console for debug(+400)
+COMMAND_ENABLE = no        # Commands for debug and configuration
+NKRO_ENABLE = no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+RGBLIGHT_ENABLE = yes       # Enable global lighting effects. Do not enable with RGB Matrix
+LED_ANIMATIONS = yes        # LED animations
+LED_MIRRORED = no           # Mirror LEDs across halves (enable DIP 1 on slave, and DIP 2 and 3 on master)
+RGB_MATRIX_ENABLE = no      # Enable per-key coordinate based RGB effects. Do not enable with RGBlight (+8500)
+RGB_MATRIX_KEYPRESSES = no  # Enable reactive per-key effects. Can be very laggy (+1500)
+RGBLIGHT_FULL_POWER = no    # Allow maximum RGB brightness. Otherwise, limited to a safe level for a normal USB-A port
+UNICODE_ENABLE = no         # Unicode
+SWAP_HANDS_ENABLE = no      # Enable one-hand typing
+ENCODER_ENABLE_CUSTOM = yes # Enable rotary encoder (+90)
+OLED_ENABLE = yes           # OLED_ENABLE (+5000)
+IOS_DEVICE_ENABLE = no      # Limit max brightness to connect to IOS device (iPad,iPhone)
+
+# Do not edit past here
+
+ifeq ($(strip $(OLED_ENABLE)), yes)
+    OPT_DEFS += -DOLED_ENABLE
+endif
+
+ifeq ($(strip $(ENCODER_ENABLE_CUSTOM)), yes)
+    OPT_DEFS += -DENCODER_ENABLE_CUSTOM
+    SRC += common/knob_v2.c
+endif
+
+ifeq ($(strip $(IOS_DEVICE_ENABLE)), yes)
+    OPT_DEFS += -DIOS_DEVICE_ENABLE
+else ifeq ($(strip $(RGBLIGHT_FULL_POWER)), yes)
+    OPT_DEFS += -DRGBLIGHT_FULL_POWER
+endif
+
+ifeq ($(strip $(RGB_MATRIX_KEYPRESSES)), yes)
+    OPT_DEFS += -DRGB_MATRIX_KEYPRESSES
+endif
+
+ifeq ($(strip $(LED_MIRRORED)), yes)
+    OPT_DEFS += -DLED_MIRRORED
+endif

keyboards/sol/keymaps/danielhklein/config.h

@@ -0,0 +1,25 @@
+/*
+This is the c configuration file for the keymap
+
+Copyright 2012 Jun Wako <wakojun@gmail.com>
+Copyright 2015 Jack Humbert
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#pragma once
+
+
+// place overrides here
+

keyboards/sol/keymaps/danielhklein/keymap.c

@@ -0,0 +1,354 @@
+#include QMK_KEYBOARD_H
+#ifdef PROTOCOL_LUFA
+#include "lufa.h"
+#include "split_util.h"
+#endif
+#ifdef SSD1306OLED
+  #include "common/ssd1306.h"
+#endif
+
+extern keymap_config_t keymap_config;
+
+#ifdef RGBLIGHT_ENABLE
+//Following line allows macro to read current RGB settings
+extern rgblight_config_t rgblight_config;
+#endif
+
+extern uint8_t is_master;
+
+// Each layer gets a name for readability, which is then used in the keymap matrix below.
+// The underscores don't mean anything - you can have a layer called STUFF or any other name.
+// Layer names don't all need to be of the same length, obviously, and you can also skip them
+// entirely and just use numbers.
+enum layer_number {
+    _QWERTY = 0,
+    _COLEMAK,
+    _FN,
+    _ADJ
+};
+
+enum custom_keycodes {
+  QWERTY = SAFE_RANGE,
+  COLEMAK,
+  FN,
+  ADJ,
+  BACKLIT,
+  RGBRST
+};
+
+enum macro_keycodes {
+  KC_SAMPLEMACRO,
+};
+
+// Define your non-alpha grouping in this define's LAYOUT, and all your BASE_LAYERS will share the same mod/macro columns
+  /* Base Layout
+   * ,------------------------------------------------.  ,------------------------------------------------.
+   * | Esc  |   1  |   2  |   3  |   4  |   5  |   -  |  |   =  |   6  |   7  |   8  |   9  |   0  |  Del |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * | Tab  |      |      |      |      |      |   [  |  |   ]  |      |      |      |      |      | Enter|
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * | Caps |      |      |      |      |      |   {  |  |   }  |      |      |      |      |      |   '  |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |Shift |      |      |      |      |      |   `  |  |   \  |      |      |      |      |      |Shift |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * | Left | Down | Ctrl |  Alt |  Gui | Bspc |  FN  |  |  ADJ | Space|  Gui |  Alt | Ctrl |  Up  |Right |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------'
+   *                                    | Bspc |  FN  |  |  ADJ | Space|
+   *                                    `-------------'  `-------------'
+   */
+#define BASE_LAYOUT( \
+  _00, _01, _02, _03, _04,  _05, _06, _07, _08, _09, \
+  _10, _11, _12, _13, _14,  _15, _16, _17, _18, _19, \
+  _20, _21, _22, _23, _24,  _25, _26, _27, _28, _29 \
+) \
+LAYOUT( \
+      KC_ESC,  KC_1,    KC_2,     KC_3,    KC_4,    KC_5,    KC_MINS,  KC_EQL,  KC_6,    KC_7,    KC_8,    KC_9,     KC_0,    KC_DEL,   \
+      KC_TAB,  _00,     _01,      _02,     _03,     _04,     KC_LBRC,  KC_RBRC, _05,     _06,     _07,     _08,      _09,     KC_ENT,   \
+      KC_CAPS, _10,     _11,      _12,     _13,     _14,     KC_LCBR,  KC_RCBR, _15,     _16,     _17,     _18,      _19,     KC_QUOT,  \
+      KC_LSFT, _20,     _21,      _22,     _23,     _24,     KC_GRV,   KC_BSLS, _25,     _26,     _27,     _28,      _29,     KC_RSFT,  \
+      KC_LEFT, KC_DOWN, KC_LCTRL, KC_LALT, KC_LGUI, KC_BSPC, FN,       ADJ,     KC_SPC,  KC_RGUI, KC_RALT, KC_RCTRL, KC_UP,   KC_RIGHT, \
+                        KC_VOLU,  KC_VOLD,          KC_BSPC, FN,       ADJ,     KC_SPC,           KC_VOLU, KC_VOLD \
+)
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+  /* Qwerty
+   * ,------------------------------------------------.  ,------------------------------------------------.
+   * |      |      |      |      |      |      |      |  |      |      |      |      |      |      |      |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      |   Q  |   W  |   E  |   R  |   T  |      |  |      |   Y  |   U  |   I  |   O  |   P  |      |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      |   A  |   S  |   D  |   F  |   G  |      |  |      |   H  |   J  |   K  |   L  |   ;  |      |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      |   Z  |   X  |   C  |   V  |   B  |      |  |      |   N  |   M  |   ,  |   .  |   /  |      |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      |      |      |      |      |      |      |  |      |      |      |      |      |      |      |
+   * `------+------+------+------+------+------+------|  |------+------+------+------+------+------+------'
+   *                                    |      |      |  |      |      |
+   *                                    `-------------'  `-------------'
+   */
+  [_QWERTY] = BASE_LAYOUT( \
+      KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    \
+      KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, \
+      KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH  \
+  ),
+
+  /* Colemak
+   * ,------------------------------------------------.  ,------------------------------------------------.
+   * |      |      |      |      |      |      |      |  |      |      |      |      |      |      |      |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      |   Q  |   W  |   F  |   P  |   G  |      |  |      |   J  |   L  |   U  |   Y  |   ;  |      |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      |   A  |   R  |   S  |   T  |   D  |      |  |      |   H  |   N  |   E  |   I  |   O  |      |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      |   Z  |   X  |   C  |   V  |   B  |      |  |      |   K  |   M  |   ,  |   .  |   /  |      |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      |      |      |      |      |      |      |  |      |      |      |      |      |      |      |
+   * `------+------+------+------+------+------+------|  |------+------+------+------+------+------+------'
+   *                                    |      |      |  |      |      |
+   *                                    `-------------'  `--------=----'
+   */
+  [_COLEMAK] = BASE_LAYOUT( \
+      KC_Q,    KC_W,    KC_F,    KC_P,    KC_B,   KC_J,    KC_L,    KC_U,    KC_Y,    KC_SCLN, \
+      KC_A,    KC_R,    KC_S,    KC_T,    KC_G,   KC_K,    KC_N,    KC_E,    KC_I,    KC_O,    \
+      KC_Z,    KC_X,    KC_C,    KC_D,    KC_V,   KC_M,    KC_H,    KC_COMM, KC_DOT,  KC_SLSH  \
+  ),
+
+
+  /* FN
+   * ,------------------------------------------------.  ,------------------------------------------------.
+   * |      |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |  |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |      |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      |      |      |      |      |      |      |  |      |      | PGDN |  UP  | PGUP | PRINT| HOME |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      |      |      |      |      |      |      |  |      |      | LEFT | DOWN | RIGHT|INSERT| END  |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |Shift |      |      |      |      |      |      |  |      | PLAY | MUTE | VOL- | VOL+ | LAST | NEXT |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      |      |      |      |  Gui |      |      |  |      |      |      |      |      |      |      |
+   * `------+------+------+------+------+------+------|  |------+------+------+------+------+------+------'
+   *                                    |      |      |  |      |      |
+   *                                    `-------------'  `-------------'
+   */
+  [_FN] = LAYOUT( \
+      XXXXXXX, KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  XXXXXXX, \
+      XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, KC_PGDN, KC_UP,   KC_PGUP, KC_PSCR, KC_HOME, \
+      XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, KC_LEFT, KC_DOWN, KC_RGHT, KC_INS,  KC_END,  \
+      _______, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, KC_MPLY, KC_MUTE, KC_VOLD, KC_VOLU, KC_MRWD, KC_MFFD, \
+      XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, _______, XXXXXXX, _______, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, \
+                        XXXXXXX, XXXXXXX,          XXXXXXX, _______, XXXXXXX, XXXXXXX,          XXXXXXX, XXXXXXX \
+      ),
+
+  /* ADJ
+   * ,------------------------------------------------.  ,------------------------------------------------.
+   * |RESET |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |  |      |   =  |   /  |   *  |   -  |      |      |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |  |      |   7  |   8  |   9  |   +  |      |      |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      | HUI  | VAI  | SAI  |      |      |COLEMK|  |      |   4  |   5  |   6  | Enter|      |      |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      | HUD  | VAD  | SAD  |      |      |QWERTY|  |      |   1  |   2  |   3  | Space|      |      |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      |RGBRST|RGBTOG|RGBMOD|RGBSMD|      |      |  |      |      |   0  |   .  | Bspc |      |      |
+   * `------+------+------+------+------+------+------|  |------+------+------+------+------+------+------'
+   *                                    |      |      |  |      |      |
+   *                                    `-------------'  `-------------'
+   */
+
+  [_ADJ] =  LAYOUT( \
+      RESET,   KC_F1,   KC_F2,   KC_F3,   KC_F4,    KC_F5,   KC_F6,   XXXXXXX, KC_PEQL, KC_PSLS, KC_PAST, KC_PMNS, XXXXXXX, XXXXXXX, \
+      XXXXXXX, KC_F7,   KC_F8,   KC_F9,   KC_F10,   KC_F11,  KC_F12,  XXXXXXX, KC_P7,   KC_P8,   KC_P9,   KC_PPLS, XXXXXXX, XXXXXXX, \
+      XXXXXXX, RGB_SAD, RGB_VAI, RGB_SAI, XXXXXXX,  XXXXXXX, COLEMAK, XXXXXXX, KC_P4,   KC_P5,   KC_P6,   KC_PENT, XXXXXXX, XXXXXXX, \
+      XXXXXXX, RGB_HUD, RGB_VAD, RGB_HUI, XXXXXXX,  XXXXXXX, QWERTY,  XXXXXXX, KC_P1,   KC_P2,   KC_P3,   KC_SPC,  XXXXXXX, XXXXXXX, \
+      XXXXXXX, RGBRST,  RGB_TOG, RGB_MOD, RGB_RMOD, XXXXXXX, XXXXXXX, _______, XXXXXXX, KC_P0,   KC_PDOT, KC_BSPC, XXXXXXX, XXXXXXX, \
+                        XXXXXXX, XXXXXXX,           XXXXXXX, XXXXXXX, _______, XXXXXXX,          XXXXXXX, XXXXXXX \
+      )
+};
+
+// define variables for reactive RGB
+bool TOG_STATUS = false;
+int RGB_current_mode;
+
+// Setting ADJ layer RGB back to default
+void update_tri_layer_RGB(uint8_t layer1, uint8_t layer2, uint8_t layer3) {
+  if (IS_LAYER_ON(layer1) && IS_LAYER_ON(layer2)) {
+    #ifdef RGBLIGHT_ENABLE
+      //rgblight_mode(RGB_current_mode);
+    #endif
+    layer_on(layer3);
+  } else {
+    layer_off(layer3);
+  }
+}
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+  //uint8_t shifted = get_mods() & (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT));
+
+  switch (keycode) {
+    case QWERTY:
+      if (record->event.pressed) {
+        set_single_persistent_default_layer(_QWERTY);
+      }
+      return false;
+      break;
+    case COLEMAK:
+      if(record->event.pressed) {
+        set_single_persistent_default_layer(_COLEMAK);
+      }
+      return false;
+      break;
+    case FN:
+      if (record->event.pressed) {
+        //not sure how to have keyboard check mode and set it to a variable, so my work around
+        //uses another variable that would be set to true after the first time a reactive key is pressed.
+        if (TOG_STATUS) { //TOG_STATUS checks is another reactive key currently pressed, only changes RGB mode if returns false
+        } else {
+          TOG_STATUS = !TOG_STATUS;
+          #ifdef RGBLIGHT_ENABLE
+            //rgblight_mode(15);
+          #endif
+        }
+        layer_on(_FN);
+      } else {
+        #ifdef RGBLIGHT_ENABLE
+          //rgblight_mode(RGB_current_mode);  // revert RGB to initial mode prior to RGB mode change
+        #endif
+        layer_off(_FN);
+        TOG_STATUS = false;
+      }
+      return false;
+      break;
+    case ADJ:
+        if (record->event.pressed) {
+          layer_on(_ADJ);
+        } else {
+          layer_off(_ADJ);
+        }
+        return false;
+        break;
+      //led operations - RGB mode change now updates the RGB_current_mode to allow the right RGB mode to be set after reactive keys are released
+    case RGBRST:
+      #ifdef RGBLIGHT_ENABLE
+        if (record->event.pressed) {
+          eeconfig_update_rgblight_default();
+          rgblight_enable();
+          RGB_current_mode = rgblight_config.mode;
+        }
+      #endif
+      break;
+  }
+  return true;
+}
+
+void matrix_init_user(void) {
+    #ifdef RGBLIGHT_ENABLE
+      RGB_current_mode = rgblight_config.mode;
+    #endif
+    //SSD1306 OLED init, make sure to add #define SSD1306OLED in config.h
+    #ifdef SSD1306OLED
+        iota_gfx_init(!has_usb());   // turns on the display
+    #endif
+}
+
+
+//SSD1306 OLED update loop, make sure to add #define SSD1306OLED in config.h
+#ifdef SSD1306OLED
+
+// hook point for 'led_test' keymap
+//   'default' keymap's led_test_init() is empty function, do nothing
+//   'led_test' keymap's led_test_init() force rgblight_mode_noeeprom(35);
+__attribute__ ((weak))
+void led_test_init(void) {}
+
+void matrix_scan_user(void) {
+    led_test_init();
+    iota_gfx_task();  // this is what updates the display continuously
+}
+
+void matrix_update(struct CharacterMatrix *dest,
+                          const struct CharacterMatrix *source) {
+  if (memcmp(dest->display, source->display, sizeof(dest->display))) {
+    memcpy(dest->display, source->display, sizeof(dest->display));
+    dest->dirty = true;
+  }
+}
+
+//assign the right code to your layers for OLED display
+#define L_BASE 0
+#define L_FN (1<<_FN)
+#define L_ADJ (1<<_ADJ)
+
+static void render_logo(struct CharacterMatrix *matrix) {
+
+  static char logo[]={
+    0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f,0x90,0x91,0x92,0x93,0x94,
+    0xa0,0xa1,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,0xa8,0xa9,0xaa,0xab,0xac,0xad,0xae,0xaf,0xb0,0xb1,0xb2,0xb3,0xb4,
+    0xc0,0xc1,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xcb,0xcc,0xcd,0xce,0xcf,0xd0,0xd1,0xd2,0xd3,0xd4,
+    0};
+  matrix_write(matrix, logo);
+  //matrix_write_P(&matrix, PSTR(" Split keyboard kit"));
+}
+
+
+
+void render_status(struct CharacterMatrix *matrix) {
+
+  // Render to mode icon
+  static char logo[][2][3]={{{0x95,0x96,0},{0xb5,0xb6,0}},{{0x97,0x98,0},{0xb7,0xb8,0}}};
+  if(keymap_config.swap_lalt_lgui==false){
+    matrix_write(matrix, logo[0][0]);
+    matrix_write_P(matrix, PSTR("\n"));
+    matrix_write(matrix, logo[0][1]);
+  }else{
+    matrix_write(matrix, logo[1][0]);
+    matrix_write_P(matrix, PSTR("\n"));
+    matrix_write(matrix, logo[1][1]);
+  }
+
+  // Define layers here, Have not worked out how to have text displayed for each layer. Copy down the number you see and add a case for it below
+  char buf[40];
+  snprintf(buf,sizeof(buf), "Undef-%ld", layer_state);
+  matrix_write_P(matrix, PSTR("\nLayer: "));
+    switch (layer_state) {
+        case L_BASE:
+           matrix_write_P(matrix, PSTR("Default"));
+           break;
+        case L_FN:
+           matrix_write_P(matrix, PSTR("FN"));
+           break;
+        case L_ADJ:
+        case L_ADJ_TRI:
+           matrix_write_P(matrix, PSTR("ADJ"));
+           break;
+        default:
+           matrix_write(matrix, buf);
+    }
+
+  // Host Keyboard LED Status
+  char led[40];
+    snprintf(led, sizeof(led), "\n%s  %s  %s",
+            (host_keyboard_leds() & (1<<USB_LED_NUM_LOCK)) ? "NUMLOCK" : "       ",
+            (host_keyboard_leds() & (1<<USB_LED_CAPS_LOCK)) ? "CAPS" : "    ",
+            (host_keyboard_leds() & (1<<USB_LED_SCROLL_LOCK)) ? "SCLK" : "    ");
+  matrix_write(matrix, led);
+}
+
+
+void iota_gfx_task_user(void) {
+  struct CharacterMatrix matrix;
+
+#if DEBUG_TO_SCREEN
+  if (debug_enable) {
+    return;
+  }
+#endif
+
+  matrix_clear(&matrix);
+  if(is_master){
+    render_status(&matrix);
+  }else{
+    render_logo(&matrix);
+  }
+  matrix_update(&display, &matrix);
+}
+
+#endif

keyboards/sol/keymaps/danielhklein/rules.mk

@@ -0,0 +1,50 @@
+# Build Options
+#   change to "no" to disable the options, or define them in the Makefile in
+#   the appropriate keymap folder that will get included automatically
+#
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
+MOUSEKEY_ENABLE = no        # Mouse keys(+4700)
+
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
+CONSOLE_ENABLE = yes        # Console for debug(+400)
+COMMAND_ENABLE = yes        # Commands for debug and configuration
+NKRO_ENABLE = no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+RGBLIGHT_ENABLE = yes       # Enable global lighting effects. Do not enable with RGB Matrix
+RGBLIGHT_ANIMATIONS = yes   # LED animations
+LED_MIRRORED = yes          # Mirror LEDs across halves (enable DIP 1 on slave, and DIP 2 and 3 on master)
+RGB_MATRIX_ENABLE = no      # Enable per-key coordinate based RGB effects. Do not enable with RGBlight (+8500)
+RGB_MATRIX_KEYPRESSES = no  # Enable reactive per-key effects. Can be very laggy (+1500)
+RGBLIGHT_FULL_POWER = no    # Allow maximum RGB brightness. Otherwise, limited to a safe level for a normal USB-A port
+UNICODE_ENABLE = no         # Unicode
+SWAP_HANDS_ENABLE = no      # Enable one-hand typing
+ENCODER_ENABLE_CUSTOM = yes # Enable rotary encoder (+90)
+
+OLED_ENABLE = no            # OLED_ENABLE (+5000)
+IOS_DEVICE_ENABLE = no      # Limit max brightness to connect to IOS device (iPad,iPhone)
+
+# Do not edit past here
+
+ifeq ($(strip $(OLED_ENABLE)), yes)
+    OPT_DEFS += -DOLED_ENABLE
+endif
+
+ifeq ($(strip $(ENCODER_ENABLE_CUSTOM)), yes)
+    OPT_DEFS += -DENCODER_ENABLE_CUSTOM
+    SRC += common/knob_v2.c
+
+endif
+
+ifeq ($(strip $(IOS_DEVICE_ENABLE)), yes)
+    OPT_DEFS += -DIOS_DEVICE_ENABLE
+
+else ifeq ($(strip $(RGBLIGHT_FULL_POWER)), yes)
+    OPT_DEFS += -DRGBLIGHT_FULL_POWER
+endif
+
+ifeq ($(strip $(RGB_MATRIX_KEYPRESSES)), yes)
+    OPT_DEFS += -DRGB_MATRIX_KEYPRESSES
+endif
+
+ifeq ($(strip $(LED_MIRRORED)), yes)
+    OPT_DEFS += -DLED_MIRRORED
+endif

keyboards/sol/keymaps/default/config.h

@@ -0,0 +1,25 @@
+/*
+This is the c configuration file for the keymap
+
+Copyright 2012 Jun Wako <wakojun@gmail.com>
+Copyright 2015 Jack Humbert
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#pragma once
+
+
+// place overrides here
+

keyboards/sol/keymaps/default/keymap.c

@@ -0,0 +1,362 @@
+#include QMK_KEYBOARD_H
+#include "bootloader.h"
+#ifdef PROTOCOL_LUFA
+#include "lufa.h"
+#include "split_util.h"
+#endif
+#ifdef SSD1306OLED
+  #include "common/ssd1306.h"
+#endif
+
+extern keymap_config_t keymap_config;
+
+#ifdef RGBLIGHT_ENABLE
+//Following line allows macro to read current RGB settings
+extern rgblight_config_t rgblight_config;
+#endif
+
+extern uint8_t is_master;
+
+// Each layer gets a name for readability, which is then used in the keymap matrix below.
+// The underscores don't mean anything - you can have a layer called STUFF or any other name.
+// Layer names don't all need to be of the same length, obviously, and you can also skip them
+// entirely and just use numbers.
+enum layer_number {
+    _QWERTY = 0,
+    _COLEMAK,
+    _FN,
+    _ADJ
+};
+
+enum custom_keycodes {
+  QWERTY = SAFE_RANGE,
+  COLEMAK,
+  FN,
+  ADJ,
+  BACKLIT,
+  RGBRST
+};
+
+enum macro_keycodes {
+  KC_SAMPLEMACRO,
+};
+
+
+
+#define FN_ESC  LT(_FN, KC_ESC)
+#define FN_CAPS  LT(_FN, KC_CAPS)
+
+// Define your non-alpha grouping in this define's LAYOUT, and all your BASE_LAYERS will share the same mod/macro columns
+  /* Base Layout
+   * ,------------------------------------------------.  ,------------------------------------------------.
+   * | GESC |      |      |      |      |      |   -  |  |   =  |      |      |      |      |      | BkSp |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * | Tab  |      |      |      |      |      |   [  |  |   ]  |      |      |      |      |      |   \  |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |FN(CAPS)|    |      |      |      |      |   (  |  |   )  |      |      |      |      |      |   '  |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |Shift |      |      |      |      |      |   {  |  |   }  |      |      |      |      |      |Shift |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * | Ctrl |  Win |  Alt |  RGB | ADJ  | Space| DEL  |  | Enter| Space|  FN  | Left | Down | Up   |Right |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------'
+   *                                    | Space| DEL  |  | Enter| Space|
+   *                                    `-------------'  `-------------'
+   */
+#define BASE_LAYOUT( \
+  _00, _01, _02, _03, _04,  _05, _06, _07, _08, _09, \
+  _10, _11, _12, _13, _14,  _15, _16, _17, _18, _19, \
+  _20, _21, _22, _23, _24,  _25, _26, _27, _28, _29 \
+) \
+LAYOUT( \
+      KC_GESC,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,   KC_MINS, KC_EQL,  KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_BSPC, \
+      KC_TAB,  _00,     _01,     _02,     _03,     _04,    KC_LBRC,  KC_RBRC, _05,     _06,     _07,     _08,     _09,     KC_BSLS, \
+      FN_CAPS, _10,     _11,     _12,     _13,     _14,    KC_LPRN,  KC_RPRN, _15,     _16,     _17,     _18,     _19,     KC_QUOT, \
+      KC_LSFT, _20,     _21,     _22,     _23,     _24,    KC_LCBR,  KC_RCBR, _25,     _26,     _27,     _28,     _29,     KC_ENT, \
+      KC_LCTL, KC_LGUI, KC_LALT, RGB_TOG,  ADJ,     KC_SPC, KC_DEL,  KC_ENT,  KC_SPC,  FN,      KC_LEFT, KC_DOWN, KC_UP,  KC_RIGHT, \
+                        KC_VOLU, KC_VOLD,          KC_SPC, KC_DEL,  KC_ENT,  KC_SPC,          KC_VOLU, KC_VOLD \
+)
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+  /* Qwerty
+   * ,------------------------------------------------.  ,------------------------------------------------.
+   * |      |      |      |      |      |      |      |  |      |      |      |      |      |      |      |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      |   Q  |   W  |   E  |   R  |   T  |      |  |      |   Y  |   U  |   I  |   O  |   P  |      |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      |   A  |   S  |   D  |   F  |   G  |      |  |      |   H  |   J  |   K  |   L  |   ;  |      |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      |   Z  |   X  |   C  |   V  |   B  |      |  |      |   N  |   M  |   ,  |   .  |   /  |      |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      |      |      |      |      |      |      |  |      |      |      |      |      |      |      |
+   * `------+------+------+------+------+------+------|  |------+------+------+------+------+------+------'
+   *                                    |      |      |  |      |      |
+   *                                    `-------------'  `--------=----'
+   */
+  [_QWERTY] = BASE_LAYOUT( \
+      KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    \
+      KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, \
+      KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH  \
+  ),
+
+  /* Colemak
+   * ,------------------------------------------------.  ,------------------------------------------------.
+   * |      |      |      |      |      |      |      |  |      |      |      |      |      |      |      |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      |   Q  |   W  |   F  |   P  |   G  |      |  |      |   J  |   L  |   U  |   Y  |   ;  |      |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      |   A  |   R  |   S  |   T  |   D  |      |  |      |   H  |   N  |   E  |   I  |   O  |      |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      |   Z  |   X  |   C  |   V  |   B  |      |  |      |   K  |   M  |   ,  |   .  |   /  |      |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      |      |      |      |      |      |      |  |      |      |      |      |      |      |      |
+   * `------+------+------+------+------+------+------|  |------+------+------+------+------+------+------'
+   *                                    |      |      |  |      |      |
+   *                                    `-------------'  `--------=----'
+   */
+  [_COLEMAK] = BASE_LAYOUT( \
+      KC_Q,    KC_W,    KC_F,    KC_P,    KC_B,   KC_J,    KC_L,    KC_U,    KC_Y,    KC_SCLN, \
+      KC_A,    KC_R,    KC_S,    KC_T,    KC_G,   KC_K,    KC_N,    KC_E,    KC_I,    KC_O,    \
+      KC_Z,    KC_X,    KC_C,    KC_D,    KC_V,   KC_M,    KC_H,    KC_COMM, KC_DOT,  KC_SLSH  \
+  ),
+
+
+  /* FN
+   * ,------------------------------------------------.  ,------------------------------------------------.
+   * |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |      |  |      |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      | PGDN |  UP  | PGUP |      |      |      |  |      |      | PGDN |  UP  | PGUP | PRINT| HOME |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      | LEFT | DOWN | RIGHT|      |      |      |  |      |      | LEFT | DOWN | RIGHT|INSERT| END  |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      |      |      |      |      |      |      |  |      |      |      |      |      |      |      |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      |      |      |RGBMOD|      |      |      |  |      |      | PLAY | NEXT | MUTE | VOL- | VOL+ |
+   * `------+------+------+------+------+------+------|  |------+------+------+------+------+------+------'
+   *                                    |      |      |  |      |      |
+   *                                    `-------------'  `-------------'
+   */
+  [_FN] = LAYOUT( \
+      KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   _______, KC_PSCR, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12, \
+      _______, KC_PGDN, KC_UP,   KC_PGUP, _______, _______, _______, _______, _______, KC_PGDN, KC_UP,   KC_PGUP, KC_PSCR, KC_HOME, \
+      _______, KC_LEFT, KC_DOWN, KC_RGHT, _______, _______, _______, _______, _______, KC_LEFT, KC_DOWN, KC_RGHT, KC_INS, KC_END, \
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, \
+      _______, _______, _______, RGB_MOD, _______, _______, _______, _______, _______,     KC_MPLY, KC_MNXT, KC_MUTE, KC_VOLD, KC_VOLU, \
+                        KC_VOLU, KC_VOLD,          _______, _______, _______, _______,           KC_VOLU, KC_VOLD \
+      ),
+
+  /* ADJ
+   * ,------------------------------------------------.  ,------------------------------------------------.
+   * |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |      |  |      |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      | SAD  | VAI  | SAI  | RESET|      |      |  |      |      |      |      |      |      |      |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      | HUD  | VAD  | HUI  |RGBRST|      |      |  |      |      |QWERTY|COLEMK|      |      |      |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      |      |      |      |      |      |      |  |      |      |      |RGBTOG|  HUI |  SAI | VAI  |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      |      |      |RGBMOD(|      |      |      |  |      |      |     |RGBRMOD| HUD |  SAD | VAD  |
+   * `------+------+------+------+------+------+------|  |------+------+------+------+------+------+------'
+   *                                    |      |      |  |      |      |
+   *                                    `-------------'  `-------------'
+   */
+
+  [_ADJ] =  LAYOUT( \
+      KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   _______, _______, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12, \
+      _______, RGB_SAD, RGB_VAI, RGB_SAI, RESET,   _______, _______, _______, _______, _______, _______, _______, _______, _______, \
+      _______, RGB_HUD, RGB_VAD, RGB_HUI, RGBRST,  _______, _______, _______, _______, QWERTY,  COLEMAK, _______, _______, _______, \
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, RGB_TOG, RGB_HUI, RGB_SAI, RGB_VAI, \
+      _______, _______, _______, RGB_MOD, _______, _______, _______, _______, _______, _______, RGB_RMOD,RGB_HUD, RGB_SAD, RGB_VAD, \
+                        KC_VOLU, KC_VOLD,          _______, _______, _______, _______,          KC_VOLU, KC_VOLD \
+      )
+};
+
+
+
+// define variables for reactive RGB
+bool TOG_STATUS = false;
+int RGB_current_mode;
+
+// Setting ADJ layer RGB back to default
+void update_tri_layer_RGB(uint8_t layer1, uint8_t layer2, uint8_t layer3) {
+  if (IS_LAYER_ON(layer1) && IS_LAYER_ON(layer2)) {
+    #ifdef RGBLIGHT_ENABLE
+      //rgblight_mode(RGB_current_mode);
+    #endif
+    layer_on(layer3);
+  } else {
+    layer_off(layer3);
+  }
+}
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+  //uint8_t shifted = get_mods() & (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT));
+
+  switch (keycode) {
+    case QWERTY:
+      if (record->event.pressed) {
+        set_single_persistent_default_layer(_QWERTY);
+      }
+      return false;
+      break;
+    case COLEMAK:
+      if(record->event.pressed) {
+        set_single_persistent_default_layer(_COLEMAK);
+      }
+      return false;
+      break;
+    case FN:
+      if (record->event.pressed) {
+        //not sure how to have keyboard check mode and set it to a variable, so my work around
+        //uses another variable that would be set to true after the first time a reactive key is pressed.
+        if (TOG_STATUS) { //TOG_STATUS checks is another reactive key currently pressed, only changes RGB mode if returns false
+        } else {
+          TOG_STATUS = !TOG_STATUS;
+          #ifdef RGBLIGHT_ENABLE
+            //rgblight_mode(15);
+          #endif
+        }
+        layer_on(_FN);
+      } else {
+        #ifdef RGBLIGHT_ENABLE
+          //rgblight_mode(RGB_current_mode);  // revert RGB to initial mode prior to RGB mode change
+        #endif
+        layer_off(_FN);
+        TOG_STATUS = false;
+      }
+      return false;
+      break;
+    case ADJ:
+        if (record->event.pressed) {
+          layer_on(_ADJ);
+        } else {
+          layer_off(_ADJ);
+        }
+        return false;
+        break;
+      //led operations - RGB mode change now updates the RGB_current_mode to allow the right RGB mode to be set after reactive keys are released
+    case RGBRST:
+      #ifdef RGBLIGHT_ENABLE
+        if (record->event.pressed) {
+          eeconfig_update_rgblight_default();
+          rgblight_enable();
+          RGB_current_mode = rgblight_config.mode;
+        }
+      #endif
+      break;
+  }
+  return true;
+}
+
+void matrix_init_user(void) {
+    #ifdef RGBLIGHT_ENABLE
+      RGB_current_mode = rgblight_config.mode;
+    #endif
+    //SSD1306 OLED init, make sure to add #define SSD1306OLED in config.h
+    #ifdef SSD1306OLED
+        iota_gfx_init(!has_usb());   // turns on the display
+    #endif
+}
+
+
+//SSD1306 OLED update loop, make sure to add #define SSD1306OLED in config.h
+#ifdef SSD1306OLED
+
+// hook point for 'led_test' keymap
+//   'default' keymap's led_test_init() is empty function, do nothing
+//   'led_test' keymap's led_test_init() force rgblight_mode_noeeprom(35);
+__attribute__ ((weak))
+void led_test_init(void) {}
+
+void matrix_scan_user(void) {
+    led_test_init();
+    iota_gfx_task();  // this is what updates the display continuously
+}
+
+void matrix_update(struct CharacterMatrix *dest,
+                          const struct CharacterMatrix *source) {
+  if (memcmp(dest->display, source->display, sizeof(dest->display))) {
+    memcpy(dest->display, source->display, sizeof(dest->display));
+    dest->dirty = true;
+  }
+}
+
+//assign the right code to your layers for OLED display
+#define L_BASE 0
+#define L_FN (1<<_FN)
+#define L_ADJ (1<<_ADJ)
+
+static void render_logo(struct CharacterMatrix *matrix) {
+
+  static char logo[]={
+    0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f,0x90,0x91,0x92,0x93,0x94,
+    0xa0,0xa1,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,0xa8,0xa9,0xaa,0xab,0xac,0xad,0xae,0xaf,0xb0,0xb1,0xb2,0xb3,0xb4,
+    0xc0,0xc1,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xcb,0xcc,0xcd,0xce,0xcf,0xd0,0xd1,0xd2,0xd3,0xd4,
+    0};
+  matrix_write(matrix, logo);
+  //matrix_write_P(&matrix, PSTR(" Split keyboard kit"));
+}
+
+
+
+void render_status(struct CharacterMatrix *matrix) {
+
+  // Render to mode icon
+  static char logo[][2][3]={{{0x95,0x96,0},{0xb5,0xb6,0}},{{0x97,0x98,0},{0xb7,0xb8,0}}};
+  if(keymap_config.swap_lalt_lgui==false){
+    matrix_write(matrix, logo[0][0]);
+    matrix_write_P(matrix, PSTR("\n"));
+    matrix_write(matrix, logo[0][1]);
+  }else{
+    matrix_write(matrix, logo[1][0]);
+    matrix_write_P(matrix, PSTR("\n"));
+    matrix_write(matrix, logo[1][1]);
+  }
+
+  // Define layers here, Have not worked out how to have text displayed for each layer. Copy down the number you see and add a case for it below
+  char buf[40];
+  snprintf(buf,sizeof(buf), "Undef-%ld", layer_state);
+  matrix_write_P(matrix, PSTR("\nLayer: "));
+    switch (layer_state) {
+        case L_BASE:
+           matrix_write_P(matrix, PSTR("Default"));
+           break;
+        case L_FN:
+           matrix_write_P(matrix, PSTR("FN"));
+           break;
+        case L_ADJ:
+        case L_ADJ_TRI:
+           matrix_write_P(matrix, PSTR("ADJ"));
+           break;
+        default:
+           matrix_write(matrix, buf);
+    }
+
+  // Host Keyboard LED Status
+  char led[40];
+    snprintf(led, sizeof(led), "\n%s  %s  %s",
+            (host_keyboard_leds() & (1<<USB_LED_NUM_LOCK)) ? "NUMLOCK" : "       ",
+            (host_keyboard_leds() & (1<<USB_LED_CAPS_LOCK)) ? "CAPS" : "    ",
+            (host_keyboard_leds() & (1<<USB_LED_SCROLL_LOCK)) ? "SCLK" : "    ");
+  matrix_write(matrix, led);
+}
+
+
+void iota_gfx_task_user(void) {
+  struct CharacterMatrix matrix;
+
+#if DEBUG_TO_SCREEN
+  if (debug_enable) {
+    return;
+  }
+#endif
+
+  matrix_clear(&matrix);
+  if(is_master){
+    render_status(&matrix);
+  }else{
+    render_logo(&matrix);
+  }
+  matrix_update(&display, &matrix);
+}
+
+#endif

keyboards/sol/keymaps/default/readme.md

@@ -0,0 +1,133 @@
+# The Default Sol Layout
+## Layout
+
+### Base modifier layout
+```
+   * ,------------------------------------------------.  ,------------------------------------------------.
+   * | GESC |      |      |      |      |      |   -  |  |   =  |      |      |      |      |      | BkSp |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * | Tab  |      |      |      |      |      |   [  |  |   ]  |      |      |      |      |      |   \  |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |FN(CAPS)|    |      |      |      |      |   (  |  |   )  |      |      |      |      |      |   '  |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |Shift |      |      |      |      |      |   {  |  |   }  |      |      |      |      |      |Shift |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * | Ctrl |  Win |  Alt |  RGB | ADJ  | Space| DEL  |  | Enter| Space|  FN  | Left | Down | Up   |Right |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------'
+   *                                    | Space| DEL  |  | Enter| Space|
+   *                                    `-------------'  `-------------'
+```
+
+### Qwerty alphas
+```
+   * ,------------------------------------------------.  ,------------------------------------------------.
+   * |      |      |      |      |      |      |      |  |      |      |      |      |      |      |      |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      |   Q  |   W  |   E  |   R  |   T  |      |  |      |   Y  |   U  |   I  |   O  |   P  |      |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      |   A  |   S  |   D  |   F  |   G  |      |  |      |   H  |   J  |   K  |   L  |   ;  |      |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      |   Z  |   X  |   C  |   V  |   B  |      |  |      |   N  |   M  |   ,  |   .  |   /  |      |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      |      |      |      |      |      |      |  |      |      |      |      |      |      |      |
+   * `------+------+------+------+------+------+------|  |------+------+------+------+------+------+------'
+   *                                    |      |      |  |      |      |
+   *                                    `-------------'  `-------------'
+```
+
+### Colemak alphas
+```
+   * ,------------------------------------------------.  ,------------------------------------------------.
+   * |      |      |      |      |      |      |      |  |      |      |      |      |      |      |      |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      |   Q  |   W  |   F  |   P  |   B  |      |  |      |   J  |   L  |   U  |   Y  |   ;  |      |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      |   A  |   R  |   S  |   T  |   G  |      |  |      |   K  |   N  |   E  |   I  |   O  |      |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      |   Z  |   X  |   C  |   D  |   V  |      |  |      |   M  |   H  |   ,  |   .  |   /  |      |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      |      |      |      |      |      |      |  |      |      |      |      |      |      |      |
+   * `------+------+------+------+------+------+------|  |------+------+------+------+------+------+------'
+   *                                    |      |      |  |      |      |
+   *                                    `-------------'  `-------------'
+```
+
+### Function (FN)
+```
+   * ,------------------------------------------------.  ,------------------------------------------------.
+   * |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |      |  |      |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      | PGDN |  UP  | PGUP |      |      |      |  |      |      | PGDN |  UP  | PGUP | PRINT| HOME |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      | LEFT | DOWN | RIGHT|      |      |      |  |      |      | LEFT | DOWN | RIGHT|INSERT| END  |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      |      |      |      |      |      |      |  |      |      |      |      |      |      |      |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      |      |      |RGBMOD|      |      |      |  |      |      | PLAY | NEXT | MUTE | VOL- | VOL+ |
+   * `------+------+------+------+------+------+------|  |------+------+------+------+------+------+------'
+   *                                    |      |      |  |      |      |
+   *                                    `-------------'  `-------------'
+```
+
+### Adjust (ADJ)
+```
+   * ,------------------------------------------------.  ,------------------------------------------------.
+   * |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |      |  |      |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      | SAD  | VAI  | SAI  | RESET|      |      |  |      |      |      |      |      |      |      |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      | HUD  | VAD  | HUI  |RGBRST|      |      |  |      |      |QWERTY|COLEMK|      |      |      |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      |      |      |      |      |      |      |  |      |      |      |RGBTOG|  HUI |  SAI | VAI  |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      |      |      |RGBMOD|      |      |      |  |      |      |      |RGBSMOD| HUD |  SAD | VAD  |
+   * `------+------+------+------+------+------+------|  |------+------+------+------+------+------+------'
+   *                                    |      |      |  |      |      |
+   *                                    `-------------'  `-------------'
+```
+
+## Customize
+
+see `qmk_firmware/keyboards/sol/rev1/keymaps/default/rules.mk`
+
+```
+
+# Variables you can set for SOL
+
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
+MOUSEKEY_ENABLE = no        # Mouse keys(+4700)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
+CONSOLE_ENABLE = yes        # Console for debug(+400)
+COMMAND_ENABLE = yes        # Commands for debug and configuration
+NKRO_ENABLE = no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+RGBLIGHT_ENABLE = yes       # Enable global lighting effects. Do not enable with RGB Matrix
+LED_ANIMATIONS = yes        # LED animations
+LED_MIRRORED = no           # Mirror LEDs across halves (enable DIP 1 on slave, and DIP 2 and 3 on master)
+RGB_MATRIX_ENABLE = no      # Enable per-key coordinate based RGB effects. Do not enable with RGBlight (+8500)
+RGB_MATRIX_KEYPRESSES = no  # Enable reactive per-key effects. Can be very laggy (+1500)
+RGBLIGHT_FULL_POWER = no    # Allow maximum RGB brightness. Otherwise, limited to a safe level for a normal USB-A port
+UNICODE_ENABLE = no         # Unicode
+SWAP_HANDS_ENABLE = no      # Enable one-hand typing
+ENCODER_ENABLE_CUSTOM = yes # Enable rotary encoder (+90)
+
+OLED_ENABLE = no            # OLED_ENABLE (+5000)
+IOS_DEVICE_ENABLE = no      # Limit max brightness to connect to IOS device (iPad,iPhone)
+
+
+```
+## Compile
+
+go to qmk top directory.
+```
+$ cd qmk_firmware
+```
+
+build
+```
+$ make sol:default
+```
+
+After the initial flash with AVRdudess, you should be able to flash using this:
+```
+$ make sol:default:dfu
+```

keyboards/sol/keymaps/default/rules.mk

@@ -0,0 +1,50 @@
+# Build Options
+#   change to "no" to disable the options, or define them in the Makefile in
+#   the appropriate keymap folder that will get included automatically
+#
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
+MOUSEKEY_ENABLE = no        # Mouse keys(+4700)
+
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
+CONSOLE_ENABLE = yes        # Console for debug(+400)
+COMMAND_ENABLE = yes        # Commands for debug and configuration
+NKRO_ENABLE = no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+RGBLIGHT_ENABLE = yes       # Enable global lighting effects. Do not enable with RGB Matrix
+RGBLIGHT_ANIMATIONS = yes   # LED animations
+LED_MIRRORED = yes          # Mirror LEDs across halves (enable DIP 1 on slave, and DIP 2 and 3 on master)
+RGB_MATRIX_ENABLE = no      # Enable per-key coordinate based RGB effects. Do not enable with RGBlight (+8500)
+RGB_MATRIX_KEYPRESSES = no  # Enable reactive per-key effects. Can be very laggy (+1500)
+RGBLIGHT_FULL_POWER = no    # Allow maximum RGB brightness. Otherwise, limited to a safe level for a normal USB-A port
+UNICODE_ENABLE = no         # Unicode
+SWAP_HANDS_ENABLE = no      # Enable one-hand typing
+ENCODER_ENABLE_CUSTOM = yes # Enable rotary encoder (+90)
+
+OLED_ENABLE = no            # OLED_ENABLE (+5000)
+IOS_DEVICE_ENABLE = no      # Limit max brightness to connect to IOS device (iPad,iPhone)
+
+# Do not edit past here
+
+ifeq ($(strip $(OLED_ENABLE)), yes)
+    OPT_DEFS += -DOLED_ENABLE
+endif
+
+ifeq ($(strip $(ENCODER_ENABLE_CUSTOM)), yes)
+    OPT_DEFS += -DENCODER_ENABLE_CUSTOM
+    SRC += common/knob_v2.c
+
+endif
+
+ifeq ($(strip $(IOS_DEVICE_ENABLE)), yes)
+    OPT_DEFS += -DIOS_DEVICE_ENABLE
+
+else ifeq ($(strip $(RGBLIGHT_FULL_POWER)), yes)
+    OPT_DEFS += -DRGBLIGHT_FULL_POWER
+endif
+
+ifeq ($(strip $(RGB_MATRIX_KEYPRESSES)), yes)
+    OPT_DEFS += -DRGB_MATRIX_KEYPRESSES
+endif
+
+ifeq ($(strip $(LED_MIRRORED)), yes)
+    OPT_DEFS += -DLED_MIRRORED
+endif

keyboards/sol/keymaps/kageurufu/config.h

@@ -0,0 +1,25 @@
+/*
+This is the c configuration file for the keymap
+
+Copyright 2012 Jun Wako <wakojun@gmail.com>
+Copyright 2015 Jack Humbert
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#pragma once
+
+
+// place overrides here
+

keyboards/sol/keymaps/kageurufu/keymap.c

@@ -0,0 +1,335 @@
+#include QMK_KEYBOARD_H
+#ifdef PROTOCOL_LUFA
+#include "lufa.h"
+#include "split_util.h"
+#endif
+#ifdef SSD1306OLED
+  #include "common/ssd1306.h"
+#endif
+
+extern keymap_config_t keymap_config;
+
+#ifdef RGBLIGHT_ENABLE
+//Following line allows macro to read current RGB settings
+extern rgblight_config_t rgblight_config;
+#endif
+
+extern uint8_t is_master;
+
+// Each layer gets a name for readability, which is then used in the keymap matrix below.
+// The underscores don't mean anything - you can have a layer called STUFF or any other name.
+// Layer names don't all need to be of the same length, obviously, and you can also skip them
+// entirely and just use numbers.
+enum layer_number {
+    _QWERTY = 0,
+    _COLEMAK,
+    _FN,
+    _ADJ
+};
+
+enum custom_keycodes {
+  QWERTY = SAFE_RANGE,
+  COLEMAK,
+  FN,
+  ADJ,
+  BACKLIT,
+  RGBRST
+};
+
+enum macro_keycodes {
+  KC_SAMPLEMACRO,
+};
+
+#define FN_ESC  LT(_FN, KC_ESC)
+
+// Define your non-alpha grouping in this define's LAYOUT, and all your BASE_LAYERS will share the same mod/macro columns
+  /* Base Layout
+   * ,------------------------------------------------.  ,------------------------------------------------.
+   * |   `  |      |      |      |      |      |      |  |      |      |      |      |      |      | BkSp |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * | Tab  |      |      |      |      |      |      |  |      |      |      |      |      |      |   \  |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * | Esc  |      |      |      |      |      |      |  |      |      |      |      |      |      |   '  |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * | Sft( |      |      |      |      |      |      |  |      |      |      |      |      |      | Sft) |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * | Ctrl |  Win |  Win |  Alt |  FN  | Space|  RGB |  |  FN  |  FN  |   -  |   =  | Down | PgUp | PgDn |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   *                                    | Space| Bksp |  | Enter| Space|
+   *                                    `-------------'  `--------=----'
+   */
+#define BASE_LAYOUT( \
+  _00, _01, _02, _03, _04,  _05, _06, _07, _08, _09, \
+  _10, _11, _12, _13, _14,  _15, _16, _17, _18, _19, \
+  _20, _21, _22, _23, _24,  _25, _26, _27, _28, _29 \
+) \
+LAYOUT( \
+      KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,   RGB_MOD,  KC_EQL,  KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_BSPC, \
+      KC_TAB,  _00,     _01,     _02,     _03,     _04,    KC_LBRC,  KC_RBRC, _05,     _06,     _07,     _08,     _09,     KC_BSLS, \
+      FN_ESC,  _10,     _11,     _12,     _13,     _14,    RGB_SAI,  RGB_VAI, _15,     _16,     _17,     _18,     _19,     KC_QUOT, \
+      KC_LSPO, _20,     _21,     _22,     _23,     _24,    RGB_SAD,  RGB_VAD, _25,     _26,     _27,     _28,     _29,     KC_RSPC, \
+      KC_LCTL, KC_LGUI, KC_LGUI, KC_LALT, FN,      KC_SPC, FN,       FN,      KC_SPC,  KC_MINS, KC_EQL,  KC_DOWN, KC_PGUP, KC_PGDN, \
+                        KC_VOLD, KC_VOLU,          KC_SPC, KC_BSPC,  KC_ENT,  KC_SPC,           KC_VOLD, KC_VOLU \
+)
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+  /* Qwerty
+   * ,------------------------------------------------.  ,------------------------------------------------.
+   * |      |      |      |      |      |      |      |  |      |      |      |      |      |      |      |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      |   Q  |   W  |   E  |   R  |   T  |      |  |      |   Y  |   U  |   I  |   O  |   P  |      |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      |   A  |   S  |   D  |   F  |   G  |      |  |      |   H  |   J  |   K  |   L  |   ;  |      |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      |   Z  |   X  |   C  |   V  |   B  |      |  |      |   N  |   M  |   ,  |   .  |   /  |      |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      |      |      |      |      |      |      |  |      |      |      |      |      |      |      |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   *                                    |      |      |  |      |      |
+   *                                    `-------------'  `--------=----'
+   */
+  [_QWERTY] = BASE_LAYOUT( \
+      KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    \
+      KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, \
+      KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH  \
+  ),
+
+  /* Colemak
+   * ,------------------------------------------------.  ,------------------------------------------------.
+   * |      |      |      |      |      |      |      |  |      |      |      |      |      |      |      |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      |   Q  |   W  |   F  |   P  |   B  |      |  |      |   J  |   L  |   U  |   Y  |   ;  |      |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |      |   A  |   R  |   S  |   T  |   G  |      |  |      |   K  |   N  |   E  |   I  |   O  |      |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      |   Z  |   X  |   C  |   D  |   V  |   [  |  |   ]  |   M  |   H  |   ,  |   .  |   /  |      |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |      |      |      |      |      |      |      |  |      |      |      |      |      |      |      |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   *                                    |      |      |  |      |      |
+   *                                    `-------------'  `--------=----'
+   */
+  [_COLEMAK] = BASE_LAYOUT( \
+      KC_Q,    KC_W,    KC_F,    KC_P,    KC_B,   KC_J,    KC_L,    KC_U,    KC_Y,    KC_SCLN, \
+      KC_A,    KC_R,    KC_S,    KC_T,    KC_G,   KC_K,    KC_N,    KC_E,    KC_I,    KC_O,    \
+      KC_Z,    KC_X,    KC_C,    KC_D,    KC_V,   KC_M,    KC_H,    KC_COMM, KC_DOT,  KC_SLSH
+  ),
+
+
+  /* FN
+   * ,------------------------------------------------.  ,------------------------------------------------.
+   * |   ~  |   !  |   @  |   #  |   $  |   %  |      |  |      |   ^  |   &  |   *  |   (  |   )  |      |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |   ~  |   !  |   @  |   #  |   $  |   %  |      |  |      |   ^  |   &  |   *  |   (  |   )  |      |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * | Ctrl |   A  |   O  |   E  |   U  |   I  |      |  |      |   D  |   H  |   T  |   N  |   S  |  /   |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * | Shift|   ;  |   Q  |   J  |   K  |   X  |   [  |  |   ]  |   B  |   M  |   W  |   V  |   Z  |Enter |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |  ADJ | Esc  | Alt  | GUI  | EISU |Lower |Space |  |Space |FN | KANA | Left | Down |  Up  |Right |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   *                                    |Lower |Space |  |Space |FN |
+   *                                    `-------------'  `------------'
+   */
+  [_FN] = LAYOUT( \
+      KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   _______, KC_PSCR, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12, \
+      _______, KC_PGDN, KC_UP,   KC_PGUP, _______, KC_LBRC, _______, _______, KC_RBRC, KC_7,    KC_UP,   KC_9,    KC_0,    KC_HOME, \
+      ADJ,     KC_LEFT, KC_DOWN, KC_RGHT, _______, _______, _______, _______, _______, KC_LEFT, KC_DOWN, KC_RGHT, KC_RBRC, KC_END, \
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_PGDN, KC_PGUP, _______, \
+      _______, _______, _______, _______, ADJ,     _______, ADJ,     ADJ,     ADJ,     KC_MPLY, KC_MNXT, KC_MUTE, KC_VOLD, KC_VOLU, \
+                        KC_VOLD, KC_VOLU,          _______, KC_DEL,  _______, _______,          KC_VOLD, KC_VOLU \
+      ),
+
+  /* ADJ
+   * ,------------------------------------------------.  ,------------------------------------------------.
+   * |   ~  |   !  |   @  |   #  |   $  |   %  |      |  |      |   ^  |   &  |   *  |   (  |   )  |      |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * |   ~  |   !  |   @  |   #  |   $  |   %  |      |  |      |   ^  |   &  |   *  |   (  |   )  |      |
+   * |------+------+------+------+------+------|------|  |------|------+------+------+------+------+------|
+   * | Ctrl |   A  |   O  |   E  |   U  |   I  |      |  |      |   D  |   H  |   T  |   N  |   S  |  /   |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * | Shift|   ;  |   Q  |   J  |   K  |   X  |   [  |  |   ]  |   B  |   M  |   W  |   V  |   Z  |Enter |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   * |ADJ| Esc  | Alt  | GUI  | EISU |Lower |Space |  |Space |FN | KANA | Left | Down |  Up  |Right |
+   * |------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
+   *                                    |Lower |Space |  |Space |FN |
+   *                                    `-------------'  `------------'
+   */
+
+  [_ADJ] =  LAYOUT( \
+      KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   _______, _______, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12, \
+      _______, RGB_SAD, RGB_VAI, RGB_SAI, RESET,   _______, _______, _______, _______, _______, _______, _______, _______, KC_DEL, \
+      _______, RGB_HUD, RGB_VAD, RGB_HUI, RGBRST,  _______, _______, _______, _______, QWERTY,  COLEMAK, _______, _______, _______, \
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, RGB_TOG, RGB_HUI, RGB_SAI, RGB_VAI, \
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, RGB_RMOD,RGB_HUD, RGB_SAD, RGB_VAD, \
+               KC_VOLD, KC_VOLU,          _______, _______, _______, _______,          KC_VOLD, KC_VOLU \
+      )
+};
+
+
+// define variables for reactive RGB
+bool TOG_STATUS = false;
+int RGB_current_mode;
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+  //uint8_t shifted = get_mods() & (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT));
+
+  switch (keycode) {
+    case QWERTY:
+      if (record->event.pressed) {
+        set_single_persistent_default_layer(_QWERTY);
+      }
+      return false;
+      break;
+    case COLEMAK:
+      if(record->event.pressed) {
+        set_single_persistent_default_layer(_COLEMAK);
+      }
+      return false;
+      break;
+    case FN:
+      if (record->event.pressed) {
+        layer_on(_FN);
+      } else {
+        layer_off(_FN);
+      }
+      return false;
+      break;
+    case ADJ:
+        if (record->event.pressed) {
+          layer_on(_ADJ);
+        } else {
+          layer_off(_ADJ);
+        }
+        return false;
+        break;
+      //led operations - RGB mode change now updates the RGB_current_mode to allow the right RGB mode to be set after reactive keys are released
+    case RGBRST:
+      #ifdef RGBLIGHT_ENABLE
+        if (record->event.pressed) {
+          eeconfig_update_rgblight_default();
+          rgblight_enable();
+          RGB_current_mode = rgblight_config.mode;
+        }
+      #endif
+      break;
+  }
+  return true;
+}
+
+void matrix_init_user(void) {
+    #ifdef RGBLIGHT_ENABLE
+      RGB_current_mode = rgblight_config.mode;
+    #endif
+    //SSD1306 OLED init, make sure to add #define SSD1306OLED in config.h
+    #ifdef SSD1306OLED
+        iota_gfx_init(!has_usb());   // turns on the display
+    #endif
+}
+
+void matrix_scan_user(void) {
+  #ifdef SSD1306OLED
+    led_test_init();
+    iota_gfx_task();  // this is what updates the display continuously
+  #endif
+}
+
+
+//SSD1306 OLED update loop, make sure to add #define SSD1306OLED in config.h
+#ifdef SSD1306OLED
+
+// hook point for 'led_test' keymap
+//   'default' keymap's led_test_init() is empty function, do nothing
+//   'led_test' keymap's led_test_init() force rgblight_mode_noeeprom(35);
+__attribute__ ((weak))
+void led_test_init(void) {}
+
+void matrix_update(struct CharacterMatrix *dest,
+                          const struct CharacterMatrix *source) {
+  if (memcmp(dest->display, source->display, sizeof(dest->display))) {
+    memcpy(dest->display, source->display, sizeof(dest->display));
+    dest->dirty = true;
+  }
+}
+
+//assign the right code to your layers for OLED display
+#define L_BASE 0
+#define L_FN (1<<_FN)
+#define L_ADJ (1<<_ADJ)
+#define L_ADJ_TRI (L_ADJ|L_FN)
+
+static void render_logo(struct CharacterMatrix *matrix) {
+
+  static char logo[]={
+    0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f,0x90,0x91,0x92,0x93,0x94,
+    0xa0,0xa1,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,0xa8,0xa9,0xaa,0xab,0xac,0xad,0xae,0xaf,0xb0,0xb1,0xb2,0xb3,0xb4,
+    0xc0,0xc1,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xcb,0xcc,0xcd,0xce,0xcf,0xd0,0xd1,0xd2,0xd3,0xd4,
+    0};
+  matrix_write(matrix, logo);
+  //matrix_write_P(&matrix, PSTR(" Split keyboard kit"));
+}
+
+
+
+void render_status(struct CharacterMatrix *matrix) {
+
+  // Render to mode icon
+  static char logo[][2][3]={{{0x95,0x96,0},{0xb5,0xb6,0}},{{0x97,0x98,0},{0xb7,0xb8,0}}};
+  if(keymap_config.swap_lalt_lgui==false){
+    matrix_write(matrix, logo[0][0]);
+    matrix_write_P(matrix, PSTR("\n"));
+    matrix_write(matrix, logo[0][1]);
+  }else{
+    matrix_write(matrix, logo[1][0]);
+    matrix_write_P(matrix, PSTR("\n"));
+    matrix_write(matrix, logo[1][1]);
+  }
+
+  // Define layers here, Have not worked out how to have text displayed for each layer. Copy down the number you see and add a case for it below
+  char buf[40];
+  snprintf(buf,sizeof(buf), "Undef-%ld", layer_state);
+  matrix_write_P(matrix, PSTR("\nLayer: "));
+    switch (layer_state) {
+        case L_BASE:
+           matrix_write_P(matrix, PSTR("Default"));
+           break;
+        case L_FN:
+           matrix_write_P(matrix, PSTR("FN"));
+           break;
+        case L_ADJ:
+        case L_ADJ_TRI:
+           matrix_write_P(matrix, PSTR("ADJ"));
+           break;
+        default:
+           matrix_write(matrix, buf);
+    }
+
+  // Host Keyboard LED Status
+  char led[40];
+    snprintf(led, sizeof(led), "\n%s  %s  %s",
+            (host_keyboard_leds() & (1<<USB_LED_NUM_LOCK)) ? "NUMLOCK" : "       ",
+            (host_keyboard_leds() & (1<<USB_LED_CAPS_LOCK)) ? "CAPS" : "    ",
+            (host_keyboard_leds() & (1<<USB_LED_SCROLL_LOCK)) ? "SCLK" : "    ");
+  matrix_write(matrix, led);
+}
+
+
+void iota_gfx_task_user(void) {
+  struct CharacterMatrix matrix;
+
+#if DEBUG_TO_SCREEN
+  if (debug_enable) {
+    return;
+  }
+#endif
+
+  matrix_clear(&matrix);
+  if(is_master){
+    render_status(&matrix);
+  }else{
+    render_logo(&matrix);
+  }
+  matrix_update(&display, &matrix);
+}
+
+#endif

keyboards/sol/keymaps/kageurufu/readme.md

@@ -0,0 +1,47 @@
+# KageUrufu's Sol Layout
+
+Read the keymap for the layout, I don't want to deal with maintained ascii art
+
+## Customize
+
+see `qmk_firmware/keyboards/sol/rev1/keymaps/default/rules.mk`
+
+```
+# Variables you can set for SOL
+
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
+MOUSEKEY_ENABLE = no        # Mouse keys(+4700)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
+CONSOLE_ENABLE = yes        # Console for debug(+400)
+COMMAND_ENABLE = yes        # Commands for debug and configuration
+NKRO_ENABLE = no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+RGBLIGHT_ENABLE = yes       # Enable global lighting effects. Do not enable with RGB Matrix
+LED_ANIMATIONS = yes        # LED animations
+LED_MIRRORED = no           # Mirror LEDs across halves (enable DIP 1 on slave, and DIP 2 and 3 on master)
+RGB_MATRIX_ENABLE = no      # Enable per-key coordinate based RGB effects. Do not enable with RGBlight (+8500)
+RGB_MATRIX_KEYPRESSES = no  # Enable reactive per-key effects. Can be very laggy (+1500)
+RGBLIGHT_FULL_POWER = no    # Allow maximum RGB brightness. Otherwise, limited to a safe level for a normal USB-A port
+UNICODE_ENABLE = no         # Unicode
+SWAP_HANDS_ENABLE = no      # Enable one-hand typing
+ENCODER_ENABLE_CUSTOM = yes # Enable rotary encoder (+90)
+
+OLED_ENABLE = no            # OLED_ENABLE (+5000)
+IOS_DEVICE_ENABLE = no      # Limit max brightness to connect to IOS device (iPad,iPhone)
+
+```
+## Compile
+
+go to qmk top directory.
+```
+$ cd qmk_firmware
+```
+
+build
+```
+$ make sol:default
+```
+
+After the initial flash with AVRdudess, you should be able to flash using this:
+```
+$ make sol:default:dfu
+```

keyboards/sol/keymaps/kageurufu/rules.mk

@@ -0,0 +1,46 @@
+# Build Options
+#   change to "no" to disable the options, or define them in the Makefile in
+#   the appropriate keymap folder that will get included automatically
+#
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
+MOUSEKEY_ENABLE = no        # Mouse keys(+4700)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
+CONSOLE_ENABLE = yes        # Console for debug(+400)
+COMMAND_ENABLE = yes        # Commands for debug and configuration
+NKRO_ENABLE = no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+RGBLIGHT_ENABLE = yes       # Enable global lighting effects. Do not enable with RGB Matrix
+LED_ANIMATIONS = yes        # LED animations
+LED_MIRRORED = no           # Mirror LEDs across halves (enable DIP 1 on slave, and DIP 2 and 3 on master)
+RGB_MATRIX_ENABLE = no      # Enable per-key coordinate based RGB effects. Do not enable with RGBlight (+8500)
+RGB_MATRIX_KEYPRESSES = no  # Enable reactive per-key effects. Can be very laggy (+1500)
+RGBLIGHT_FULL_POWER = no    # Allow maximum RGB brightness. Otherwise, limited to a safe level for a normal USB-A port
+UNICODE_ENABLE = no         # Unicode
+SWAP_HANDS_ENABLE = no      # Enable one-hand typing
+ENCODER_ENABLE_CUSTOM = yes # Enable rotary encoder (+90)
+OLED_ENABLE = no            # OLED_ENABLE (+5000)
+IOS_DEVICE_ENABLE = no      # Limit max brightness to connect to IOS device (iPad,iPhone)
+
+# Do not edit past here
+
+ifeq ($(strip $(OLED_ENABLE)), yes)
+    OPT_DEFS += -DOLED_ENABLE
+endif
+
+ifeq ($(strip $(ENCODER_ENABLE_CUSTOM)), yes)
+    OPT_DEFS += -DENCODER_ENABLE_CUSTOM
+    SRC += common/knob_v2.c
+endif
+
+ifeq ($(strip $(IOS_DEVICE_ENABLE)), yes)
+    OPT_DEFS += -DIOS_DEVICE_ENABLE
+else ifeq ($(strip $(RGBLIGHT_FULL_POWER)), yes)
+    OPT_DEFS += -DRGBLIGHT_FULL_POWER
+endif
+
+ifeq ($(strip $(RGB_MATRIX_KEYPRESSES)), yes)
+    OPT_DEFS += -DRGB_MATRIX_KEYPRESSES
+endif
+
+ifeq ($(strip $(LED_MIRRORED)), yes)
+    OPT_DEFS += -DLED_MIRRORED
+endif

keyboards/sol/readme.md

@@ -0,0 +1,15 @@
+# Sol
+
+![Sol](https://cdn.shopify.com/s/files/1/0008/8827/5005/products/CqdJAno_2048x2048.jpg?v=1533825028)
+
+Sol is a split ergonomic keyboard with ortholinear alphas and several modifier layouts. It can use up to 88 RGB LEDs, with per-key backlighting and underglow. The boards have presoldered components, including type C ports and ATmega32U4. Sol, when used with dual power supplies, is the brightest keyboard on earth.
+
+Keyboard Maintainer: [Legonut](https://github.com/Legonut)  
+Hardware Supported: Sol PCB R1.0, R1.1  
+Hardware Availability: [RGBKB](https://www.rgbkb.net)
+
+Make example for this keyboard (after setting up your build environment):
+
+    make sol:default
+
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).

keyboards/sol/rev1/config.h

@@ -0,0 +1,155 @@
+/*
+Copyright 2012 Jun Wako <wakojun@gmail.com>
+Copyright 2015 Jack Humbert
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef REV1_CONFIG_H
+#define REV1_CONFIG_H
+
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID       0xFEED
+#define PRODUCT_ID      0x3060
+#define DEVICE_VER      0x0001
+#define MANUFACTURER    RGBKB
+#define PRODUCT         Sol
+#define DESCRIPTION     "An RGB, split, ortho-esque keyboard"
+
+
+#define PREVENT_STUCK_MODIFIERS
+#define TAPPING_FORCE_HOLD
+#define TAPPING_TERM 150
+
+#define USE_I2C
+#define USE_SERIAL
+#define USE_SERIAL_PD3
+
+/* Select hand configuration */
+#define MASTER_LEFT
+// #define MASTER_RIGHT
+// #define EE_HANDS
+
+// Helix keyboard OLED support
+//      see ./rules.mk: OLED_ENABLE=yes or no
+#ifdef OLED_ENABLE
+  #define SSD1306OLED
+#endif
+
+/* Select rows configuration */
+// Rows are 4 or 5
+// #define HELIX_ROWS 5 see ./rules.mk
+
+/* key matrix size */
+// Rows are doubled-up
+#define MATRIX_ROWS 12
+#define MATRIX_ROW_PINS { C6, B6, B5, B4, D7, E6}
+
+// wiring of each half
+#define MATRIX_COLS 7
+#define MATRIX_COL_PINS { F0, F1, F4, F5, F6, F7, C7 }
+// #define MATRIX_COL_PINS { B2, B3, B1, F7, F6, F5, F4 } //uncomment this line and comment line above if you need to reverse left-to-right key order
+
+/* define if matrix has ghost */
+//#define MATRIX_HAS_GHOST
+
+/* number of backlight levels */
+// #define BACKLIGHT_LEVELS 3
+
+/* Set 0 if debouncing isn't needed */
+#define DEBOUNCING_DELAY 5
+
+/* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
+//#define LOCKING_SUPPORT_ENABLE
+/* Locking resynchronize hack */
+//#define LOCKING_RESYNC_ENABLE
+
+/* key combination for command */
+#define IS_COMMAND() ( \
+    keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
+)
+
+/* ws2812 RGB LED */
+#define RGB_DI_PIN B3
+#define RGBLIGHT_TIMER
+//#define RGBLED_NUM 12    // Number of LEDs. see ./keymaps/default/config.h
+#define ws2812_PORTREG  PORTD
+#define ws2812_DDRREG   DDRD
+
+#define DRIVER_COUNT      2
+#define DRIVER_LED_TOTAL  70
+// #define RGB_MATRIX_KEYPRESSES
+#define BACKLIGHT_PIN B7
+#define BACKLIGHT_LEVELS 5
+
+#ifdef LED_MIRRORED
+  #define RGBLED_NUM 35
+#else
+  #define RGBLED_NUM 70
+#endif
+
+#define RGBLIGHT_RAINBOW_SWIRL_RANGE 1950
+
+#ifdef IOS_DEVICE_ENABLE
+  #define RGBLIGHT_LIMIT_VAL 40
+  #define RGB_MATRIX_MAXIMUM_BRIGHTNESS 40
+#elif RGBLIGHT_FULL_POWER
+  #define RGBLIGHT_LIMIT_VAL 255
+  #define RGB_MATRIX_MAXIMUM_BRIGHTNESS 255
+#else
+  #define RGBLIGHT_LIMIT_VAL 120
+  #define RGB_MATRIX_MAXIMUM_BRIGHTNESS 120
+#endif
+
+#define RGBLIGHT_VAL_STEP (RGBLIGHT_LIMIT_VAL / 10)
+#define RGBLIGHT_HUE_STEP 10
+#define RGBLIGHT_SAT_STEP 17
+
+#define RGBLIGHT_ANIMATIONS
+
+#if defined(RGBLIGHT_ENABLE) && !defined(IOS_DEVICE_ENABLE)
+// USB_MAX_POWER_CONSUMPTION value for Helix keyboard
+//  120  RGBoff, OLEDoff
+//  120  OLED
+//  330  RGB 6
+//  300  RGB 32
+//  310  OLED & RGB 32
+  #define USB_MAX_POWER_CONSUMPTION 500
+#else
+  // fix iPhone and iPad power adapter issue
+  // iOS device need lessthan 100
+  #define USB_MAX_POWER_CONSUMPTION 100
+#endif
+
+/*
+ * Feature disable options
+ *  These options are also useful to firmware size reduction.
+ */
+
+/* disable debug print */
+// #define NO_DEBUG
+
+/* disable print */
+// #define NO_PRINT
+
+/* disable action features */
+//#define NO_ACTION_LAYER
+//#define NO_ACTION_TAPPING
+//#define NO_ACTION_ONESHOT
+//#define NO_ACTION_MACRO
+//#define NO_ACTION_FUNCTION
+
+
+#endif

keyboards/sol/rev1/matrix.c

@@ -0,0 +1,304 @@
+/*
+Copyright 2012 Jun Wako <wakojun@gmail.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/*
+ * scan matrix
+ */
+#include <stdint.h>
+#include <stdbool.h>
+#include <avr/io.h>
+#include <avr/wdt.h>
+#include <avr/interrupt.h>
+#include <util/delay.h>
+#include "print.h"
+#include "debug.h"
+#include "util.h"
+#include "matrix.h"
+#include "split_util.h"
+#include <drivers/avr/pro_micro.h>
+
+#include "serial.h"
+
+#ifndef DEBOUNCE
+#  define DEBOUNCE	5
+#endif
+
+#ifdef ENCODER_ENABLE_CUSTOM
+  #include "common/knob_v2.h"
+#endif
+
+#define ERROR_DISCONNECT_COUNT 5
+
+static uint8_t debouncing = DEBOUNCE;
+static const int ROWS_PER_HAND = MATRIX_ROWS/2;
+static uint8_t error_count = 0;
+uint8_t is_master = 0 ;
+
+static const uint8_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
+static const uint8_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
+
+/* matrix state(1:on, 0:off) */
+static matrix_row_t matrix[MATRIX_ROWS];
+static matrix_row_t matrix_debouncing[MATRIX_ROWS];
+
+static matrix_row_t read_cols(void);
+static void init_cols(void);
+static void unselect_rows(void);
+static void select_row(uint8_t row);
+static uint8_t matrix_master_scan(void);
+
+
+__attribute__ ((weak))
+void matrix_init_kb(void) {
+    matrix_init_user();
+}
+
+__attribute__ ((weak))
+void matrix_scan_kb(void) {
+    matrix_scan_user();
+}
+
+__attribute__ ((weak))
+void matrix_init_user(void) {
+}
+
+__attribute__ ((weak))
+void matrix_scan_user(void) {
+}
+
+inline
+uint8_t matrix_rows(void)
+{
+    return MATRIX_ROWS;
+}
+
+inline
+uint8_t matrix_cols(void)
+{
+    return MATRIX_COLS;
+}
+
+void matrix_init(void)
+{
+    debug_enable = true;
+    debug_matrix = true;
+    debug_mouse = true;
+    // initialize row and col
+    unselect_rows();
+    init_cols();
+
+    TX_RX_LED_INIT;
+
+    // initialize matrix state: all keys off
+    for (uint8_t i=0; i < MATRIX_ROWS; i++) {
+        matrix[i] = 0;
+        matrix_debouncing[i] = 0;
+    }
+
+    is_master = has_usb();
+
+    #ifdef ENCODER_ENABLE_CUSTOM
+        knob_init();  //FOR ENCODER
+    #endif
+    matrix_init_quantum();
+}
+
+uint8_t _matrix_scan(void)
+{
+    // Right hand is stored after the left in the matirx so, we need to offset it
+    int offset = isLeftHand ? 0 : (ROWS_PER_HAND);
+
+    for (uint8_t i = 0; i < ROWS_PER_HAND; i++) {
+        select_row(i);
+        _delay_us(30);  // without this wait read unstable value.
+        matrix_row_t cols = read_cols();
+        if (matrix_debouncing[i+offset] != cols) {
+            matrix_debouncing[i+offset] = cols;
+            debouncing = DEBOUNCE;
+        }
+        unselect_rows();
+    }
+
+    if (debouncing) {
+        if (--debouncing) {
+            _delay_ms(1);
+        } else {
+            for (uint8_t i = 0; i < ROWS_PER_HAND; i++) {
+                matrix[i+offset] = matrix_debouncing[i+offset];
+            }
+        }
+    }
+
+    #ifdef ENCODER_ENABLE_CUSTOM
+      knob_report_t knob_report = knob_report_read();
+
+      knob_report_reset();
+
+      matrix[5 + offset] &= 0b11111100;
+      if (knob_report.phase) { // I check for phase to avoid handling the rotation twice (on 90 and 270 degrees).
+        if (knob_report.dir > 0) {
+          matrix[5 + offset] |= 0b00000001;
+        } else if (knob_report.dir < 0) {
+          matrix[5 + offset] |= 0b00000010;
+        }
+      }
+    #endif
+
+    return 1;
+}
+
+int serial_transaction(void) {
+    int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
+    int ret=serial_update_buffers();
+    if (ret ) {
+        return 1;
+    }
+
+    for (int i = 0; i < ROWS_PER_HAND; ++i) {
+        matrix[slaveOffset+i] = serial_slave_buffer[i];
+    }
+    return 0;
+}
+
+uint8_t matrix_scan(void)
+{
+    if (is_master) {
+        matrix_master_scan();
+    }else{
+        matrix_slave_scan();
+
+        int offset = (isLeftHand) ? ROWS_PER_HAND : 0;
+
+        for (int i = 0; i < ROWS_PER_HAND; ++i) {
+            matrix[offset+i] = serial_master_buffer[i];
+        }
+
+        matrix_scan_quantum();
+    }
+    return 1;
+}
+
+
+uint8_t matrix_master_scan(void) {
+
+    int ret = _matrix_scan();
+
+    int offset = (isLeftHand) ? 0 : ROWS_PER_HAND;
+
+    for (int i = 0; i < ROWS_PER_HAND; ++i) {
+        serial_master_buffer[i] = matrix[offset+i];
+    }
+
+    if( serial_transaction() ) {
+        // turn on the indicator led when halves are disconnected
+        TXLED1;
+
+        error_count++;
+
+        if (error_count > ERROR_DISCONNECT_COUNT) {
+            // reset other half if disconnected
+            int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
+            for (int i = 0; i < ROWS_PER_HAND; ++i) {
+                matrix[slaveOffset+i] = 0;
+            }
+        }
+    } else {
+        // turn off the indicator led on no error
+        TXLED0;
+        error_count = 0;
+    }
+    matrix_scan_quantum();
+    return ret;
+}
+
+void matrix_slave_scan(void) {
+    _matrix_scan();
+
+    int offset = (isLeftHand) ? 0 : ROWS_PER_HAND;
+
+    for (int i = 0; i < ROWS_PER_HAND; ++i) {
+        serial_slave_buffer[i] = matrix[offset+i];
+    }
+}
+
+bool matrix_is_modified(void)
+{
+    if (debouncing) return false;
+    return true;
+}
+
+inline
+bool matrix_is_on(uint8_t row, uint8_t col)
+{
+    return (matrix[row] & ((matrix_row_t)1<<col));
+}
+
+inline
+matrix_row_t matrix_get_row(uint8_t row)
+{
+    return matrix[row];
+}
+
+void matrix_print(void)
+{
+    print("\nr/c 0123456789ABCDEF\n");
+    for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
+        phex(row); print(": ");
+        pbin_reverse16(matrix_get_row(row));
+        print("\n");
+    }
+}
+
+uint8_t matrix_key_count(void)
+{
+    uint8_t count = 0;
+    for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+        count += bitpop16(matrix[i]);
+    }
+    return count;
+}
+
+static void  init_cols(void)
+{
+    for(int x = 0; x < MATRIX_COLS; x++) {
+        _SFR_IO8((col_pins[x] >> 4) + 1) &=  ~_BV(col_pins[x] & 0xF);
+        _SFR_IO8((col_pins[x] >> 4) + 2) |= _BV(col_pins[x] & 0xF);
+    }
+}
+
+static matrix_row_t read_cols(void)
+{
+    matrix_row_t result = 0;
+    for(int x = 0; x < MATRIX_COLS; x++) {
+        result |= (_SFR_IO8(col_pins[x] >> 4) & _BV(col_pins[x] & 0xF)) ? 0 : (1 << x);
+    }
+    return result;
+}
+
+static void unselect_rows(void)
+{
+    for(int x = 0; x < ROWS_PER_HAND; x++) {
+        _SFR_IO8((row_pins[x] >> 4) + 1) &=  ~_BV(row_pins[x] & 0xF);
+        _SFR_IO8((row_pins[x] >> 4) + 2) |= _BV(row_pins[x] & 0xF);
+    }
+}
+
+static void select_row(uint8_t row)
+{
+    _SFR_IO8((row_pins[row] >> 4) + 1) |=  _BV(row_pins[row] & 0xF);
+    _SFR_IO8((row_pins[row] >> 4) + 2) &= ~_BV(row_pins[row] & 0xF);
+}

keyboards/sol/rev1/rev1.c

@@ -0,0 +1,15 @@
+#include "sol.h"
+
+
+#ifdef SSD1306OLED
+void led_set_kb(uint8_t usb_led) {
+    // put your keyboard LED indicator (ex: Caps Lock LED) toggling code here
+    //led_set_user(usb_led);
+}
+#endif
+
+void matrix_init_kb(void) {
+
+	matrix_init_user();
+};
+

keyboards/sol/rev1/rev1.h

@@ -0,0 +1,70 @@
+#ifndef REV1_H
+#define REV1_H
+
+#include "sol.h"
+
+//void promicro_bootloader_jmp(bool program);
+#include "quantum.h"
+
+#ifdef RGBLIGHT_ENABLE
+//rgb led driver
+#include "ws2812.h"
+#endif
+
+#ifdef USE_I2C
+#include <stddef.h>
+#ifdef __AVR__
+	#include <avr/io.h>
+	#include <avr/interrupt.h>
+#endif
+#endif
+
+//void promicro_bootloader_jmp(bool program);
+// LEL/LER/REL/RER are
+//   LeftEncoderLeft, LeftEncoderRight, RightEncoderLeft, and RightEncoderRight
+
+#define LAYOUT( \
+  L00, L01, L02, L03, L04, L05, L06, R06, R00, R01, R02, R03, R04, R05, \
+  L10, L11, L12, L13, L14, L15, L16, R16, R10, R11, R12, R13, R14, R15, \
+  L20, L21, L22, L23, L24, L25, L26, R26, R20, R21, R22, R23, R24, R25, \
+  L30, L31, L32, L33, L34, L35, L36, R36, R30, R31, R32, R33, R34, R35, \
+  L40, L41, L42, L43, L44, L45, L46, R46, R40, R41, R42, R43, R44, R45, \
+            LEL, LER,      L55, L56, R56, R50,      REL, RER \
+  ) \
+  { \
+    { L00, L01, L02, L03, L04, L05, L06 }, \
+    { L10, L11, L12, L13, L14, L15, L16 }, \
+    { L20, L21, L22, L23, L24, L25, L26 }, \
+    { L30, L31, L32, L33, L34, L35, L36 }, \
+    { L40, L41, L42, L43, L44, L45, L46 }, \
+    { LEL, LER, KC_NO, KC_NO, KC_NO, L55, L56 }, \
+    { R05, R04, R03, R02, R01, R00, R06 }, \
+    { R15, R14, R13, R12, R11, R10, R16 }, \
+    { R25, R24, R23, R22, R21, R20, R26 }, \
+    { R35, R34, R33, R32, R31, R30, R36 }, \
+    { R45, R44, R43, R42, R41, R40, R46 }, \
+    { REL, RER, KC_NO, KC_NO, KC_NO, R50, R56 } \
+  }
+
+#define KC________ KC_TRNS
+#define KC_RGB_MOD RGB_MOD
+#define KC_FN FN
+#define KC_ADJ ADJ
+#define LAYOUT_kc( \
+  L00, L01, L02, L03, L04, L05, L06, R06, R00, R01, R02, R03, R04, R05, \
+  L10, L11, L12, L13, L14, L15, L16, R16, R10, R11, R12, R13, R14, R15, \
+  L20, L21, L22, L23, L24, L25, L26, R26, R20, R21, R22, R23, R24, R25, \
+  L30, L31, L32, L33, L34, L35, L36, R36, R30, R31, R32, R33, R34, R35, \
+  L40, L41, L42, L43, L44, L45, L46, R46, R40, R41, R42, R43, R44, R45, \
+            LEL, LER,      L55, L56, R56, R50,      REL, RER \
+  ) \
+  LAYOUT( \
+    KC_##L00, KC_##L01, KC_##L02, KC_##L03, KC_##L04, KC_##L05, KC_##L06, KC_##R06, KC_##R00, KC_##R01, KC_##R02, KC_##R03, KC_##R04, KC_##R05, \
+    KC_##L10, KC_##L11, KC_##L12, KC_##L13, KC_##L14, KC_##L15, KC_##L16, KC_##R16, KC_##R10, KC_##R11, KC_##R12, KC_##R13, KC_##R14, KC_##R15, \
+    KC_##L20, KC_##L21, KC_##L22, KC_##L23, KC_##L24, KC_##L25, KC_##L26, KC_##R26, KC_##R20, KC_##R21, KC_##R22, KC_##R23, KC_##R24, KC_##R25, \
+    KC_##L30, KC_##L31, KC_##L32, KC_##L33, KC_##L34, KC_##L35, KC_##L36, KC_##R36, KC_##R30, KC_##R31, KC_##R32, KC_##R33, KC_##R34, KC_##R35, \
+    KC_##L40, KC_##L41, KC_##L42, KC_##L43, KC_##L44, KC_##L45, KC_##L46, KC_##R46, KC_##R40, KC_##R41, KC_##R42, KC_##R43, KC_##R44, KC_##R45, \
+                        KC_##LEL, KC_##LER,      KC_##L55, KC_##L56, KC_##R56, KC_##R50,      KC_##REL, KC_##RER \
+  )
+
+#endif

keyboards/sol/rev1/rules.mk

@@ -0,0 +1,2 @@
+SRC += rev1/matrix.c \
+	     rev1/split_util.c

keyboards/sol/rev1/split_util.c

@@ -0,0 +1,54 @@
+#include <avr/io.h>
+#include <avr/wdt.h>
+#include <avr/power.h>
+#include <avr/interrupt.h>
+#include <util/delay.h>
+#include <avr/eeprom.h>
+#include "split_util.h"
+#include "matrix.h"
+#include "keyboard.h"
+#include "serial.h"
+
+volatile bool isLeftHand = true;
+
+static void setup_handedness(void) {
+  #ifdef EE_HANDS
+    isLeftHand = eeprom_read_byte(EECONFIG_HANDEDNESS);
+  #else
+    #if defined(MASTER_RIGHT)
+      isLeftHand = !has_usb();
+    #else
+      isLeftHand = has_usb();
+    #endif
+  #endif
+}
+
+static void keyboard_master_setup(void) {
+    serial_master_init();
+}
+
+static void keyboard_slave_setup(void) {
+    serial_slave_init();
+}
+
+bool has_usb(void) {
+   USBCON |= (1 << OTGPADE); //enables VBUS pad
+   _delay_us(5);
+   return (USBSTA & (1<<VBUS));  //checks state of VBUS
+}
+
+void split_keyboard_setup(void) {
+   setup_handedness();
+
+   if (has_usb()) {
+      keyboard_master_setup();
+   } else {
+      keyboard_slave_setup();
+   }
+   sei();
+}
+
+// this code runs before the usb and keyboard is initialized
+void matrix_setup(void) {
+    split_keyboard_setup();
+}

keyboards/sol/rev1/split_util.h

@@ -0,0 +1,17 @@
+#ifndef SPLIT_KEYBOARD_UTIL_H
+#define SPLIT_KEYBOARD_UTIL_H
+
+#include <stdbool.h>
+#include "eeconfig.h"
+
+extern volatile bool isLeftHand;
+
+// slave version of matix scan, defined in matrix.c
+void matrix_slave_scan(void);
+
+void split_keyboard_setup(void);
+bool has_usb(void);
+
+void matrix_master_OLED_init (void);
+
+#endif

keyboards/sol/rules.mk

@@ -0,0 +1,71 @@
+SRC += i2c.c \
+	     serial.c \
+	     common/ssd1306.c
+
+# MCU name
+#MCU = at90usb1287
+MCU = atmega32u4
+
+# Processor frequency.
+#     This will define a symbol, F_CPU, in all source code files equal to the
+#     processor frequency in Hz. You can then use this symbol in your source code to
+#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
+#     automatically to create a 32-bit value in your source code.
+#
+#     This will be an integer division of F_USB below, as it is sourced by
+#     F_USB after it has run through any CPU prescalers. Note that this value
+#     does not *change* the processor frequency - it should merely be updated to
+#     reflect the processor speed set externally so that the code can use accurate
+#     software delays.
+F_CPU = 16000000
+
+#
+# LUFA specific
+#
+# Target architecture (see library "Board Types" documentation).
+ARCH = AVR8
+
+# Input clock frequency.
+#     This will define a symbol, F_USB, in all source code files equal to the
+#     input clock frequency (before any prescaling is performed) in Hz. This value may
+#     differ from F_CPU if prescaling is used on the latter, and is required as the
+#     raw input clock is fed directly to the PLL sections of the AVR for high speed
+#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
+#     at the end, this will be done automatically to create a 32-bit value in your
+#     source code.
+#
+#     If no clock division is performed on the input clock inside the AVR (via the
+#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
+F_USB = $(F_CPU)
+
+# Bootloader
+#     This definition is optional, and if your keyboard supports multiple bootloaders of
+#     different sizes, comment this out, and the correct address will be loaded
+#     automatically (+60). See bootloader.mk for all options.
+BOOTLOADER = qmk-dfu
+
+# Interrupt driven control endpoint task(+60)
+OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
+
+# Build Options
+#   change to "no" to disable the options, or define them in the Makefile in
+#   the appropriate keymap folder that will get included automatically
+#
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
+MOUSEKEY_ENABLE = no       # Mouse keys(+4700)
+EXTRAKEY_ENABLE = no       # Audio control and System control(+450)
+CONSOLE_ENABLE = no         # Console for debug(+400)
+COMMAND_ENABLE = no        # Commands for debug and configuration
+NKRO_ENABLE = no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+BACKLIGHT_ENABLE = no      # Enable keyboard backlight functionality
+MIDI_ENABLE = no            # MIDI controls
+AUDIO_ENABLE = no           # Audio output on port C6
+UNICODE_ENABLE = no         # Unicode
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
+RGBLIGHT_ENABLE = no       # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
+# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
+SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
+
+CUSTOM_MATRIX = yes
+
+DEFAULT_FOLDER = sol/rev1

keyboards/sol/serial.c

@@ -0,0 +1,288 @@
+/*
+ * WARNING: be careful changing this code, it is very timing dependent
+ */
+
+#ifndef F_CPU
+#define F_CPU 16000000
+#endif
+
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <util/delay.h>
+#include <stdbool.h>
+#include "serial.h"
+
+#ifdef USE_SERIAL
+
+#define _delay_sub_us(x)    __builtin_avr_delay_cycles(x)
+
+// Serial pulse period in microseconds.
+#define SELECT_SERIAL_SPEED 1
+#if SELECT_SERIAL_SPEED == 0
+  // Very High speed
+  #define SERIAL_DELAY 4             // micro sec
+  #define READ_WRITE_START_ADJUST 30 // cycles
+  #define READ_WRITE_WIDTH_ADJUST 10 // cycles
+#elif SELECT_SERIAL_SPEED == 1
+  // High speed
+  #define SERIAL_DELAY 6             // micro sec
+  #define READ_WRITE_START_ADJUST 23 // cycles
+  #define READ_WRITE_WIDTH_ADJUST 10 // cycles
+#elif SELECT_SERIAL_SPEED == 2
+  // Middle speed
+  #define SERIAL_DELAY 12            // micro sec
+  #define READ_WRITE_START_ADJUST 25 // cycles
+  #define READ_WRITE_WIDTH_ADJUST 10 // cycles
+#elif SELECT_SERIAL_SPEED == 3
+  // Low speed
+  #define SERIAL_DELAY 24            // micro sec
+  #define READ_WRITE_START_ADJUST 25 // cycles
+  #define READ_WRITE_WIDTH_ADJUST 10 // cycles
+#elif SELECT_SERIAL_SPEED == 4
+  // Very Low speed
+  #define SERIAL_DELAY 50            // micro sec
+  #define READ_WRITE_START_ADJUST 25 // cycles
+  #define READ_WRITE_WIDTH_ADJUST 10 // cycles
+#else
+#error Illegal Serial Speed
+#endif
+
+
+#define SERIAL_DELAY_HALF1 (SERIAL_DELAY/2)
+#define SERIAL_DELAY_HALF2 (SERIAL_DELAY - SERIAL_DELAY/2)
+
+#define SLAVE_INT_WIDTH 1
+#define SLAVE_INT_RESPONSE_TIME SERIAL_DELAY
+
+uint8_t volatile serial_slave_buffer[SERIAL_SLAVE_BUFFER_LENGTH] = {0};
+uint8_t volatile serial_master_buffer[SERIAL_MASTER_BUFFER_LENGTH] = {0};
+
+#define SLAVE_DATA_CORRUPT (1<<0)
+volatile uint8_t status = 0;
+
+inline static
+void serial_delay(void) {
+  _delay_us(SERIAL_DELAY);
+}
+
+inline static
+void serial_delay_half1(void) {
+  _delay_us(SERIAL_DELAY_HALF1);
+}
+
+inline static
+void serial_delay_half2(void) {
+  _delay_us(SERIAL_DELAY_HALF2);
+}
+
+inline static
+void serial_output(void) {
+  SERIAL_PIN_DDR |= SERIAL_PIN_MASK;
+}
+
+// make the serial pin an input with pull-up resistor
+inline static
+void serial_input_with_pullup(void) {
+  SERIAL_PIN_DDR  &= ~SERIAL_PIN_MASK;
+  SERIAL_PIN_PORT |= SERIAL_PIN_MASK;
+}
+
+inline static
+uint8_t serial_read_pin(void) {
+  return !!(SERIAL_PIN_INPUT & SERIAL_PIN_MASK);
+}
+
+inline static
+void serial_low(void) {
+  SERIAL_PIN_PORT &= ~SERIAL_PIN_MASK;
+}
+
+inline static
+void serial_high(void) {
+  SERIAL_PIN_PORT |= SERIAL_PIN_MASK;
+}
+
+void serial_master_init(void) {
+  serial_output();
+  serial_high();
+}
+
+void serial_slave_init(void) {
+  serial_input_with_pullup();
+
+
+// Enable INT3
+EIMSK |= _BV(INT3);
+// Trigger on falling edge of INT3
+EICRA &= ~(_BV(ISC30) | _BV(ISC31));
+
+}
+
+// Used by the sender to synchronize timing with the reciver.
+static
+void sync_recv(void) {
+  for (int i = 0; i < SERIAL_DELAY*5 && serial_read_pin(); i++ ) {
+  }
+  // This shouldn't hang if the slave disconnects because the
+  // serial line will float to high if the slave does disconnect.
+  while (!serial_read_pin());
+}
+
+// Used by the reciver to send a synchronization signal to the sender.
+static
+void sync_send(void) {
+  serial_low();
+  serial_delay();
+  serial_high();
+}
+
+// Reads a byte from the serial line
+static
+uint8_t serial_read_byte(void) {
+  uint8_t byte = 0;
+  _delay_sub_us(READ_WRITE_START_ADJUST);
+  for ( uint8_t i = 0; i < 8; ++i) {
+    serial_delay_half1();   // read the middle of pulses
+    byte = (byte << 1) | serial_read_pin();
+    _delay_sub_us(READ_WRITE_WIDTH_ADJUST);
+    serial_delay_half2();
+  }
+  return byte;
+}
+
+// Sends a byte with MSB ordering
+static
+void serial_write_byte(uint8_t data) {
+  uint8_t b = 1<<7;
+  while( b ) {
+    if(data & b) {
+      serial_high();
+    } else {
+      serial_low();
+    }
+    b >>= 1;
+    serial_delay();
+  }
+  serial_low(); // sync_send() / senc_recv() need raise edge
+}
+
+// interrupt handle to be used by the slave device
+ISR(SERIAL_PIN_INTERRUPT) {
+  serial_output();
+
+  // slave send phase
+  uint8_t checksum = 0;
+  for (int i = 0; i < SERIAL_SLAVE_BUFFER_LENGTH; ++i) {
+    sync_send();
+    serial_write_byte(serial_slave_buffer[i]);
+    checksum += serial_slave_buffer[i];
+  }
+  sync_send();
+  serial_write_byte(checksum);
+
+  // slave switch to input
+  sync_send(); //0
+  serial_delay_half1(); //1
+  serial_low();         //2
+  serial_input_with_pullup(); //2
+  serial_delay_half1(); //3
+
+  // slave recive phase
+  uint8_t checksum_computed = 0;
+  for (int i = 0; i < SERIAL_MASTER_BUFFER_LENGTH; ++i) {
+    sync_recv();
+    serial_master_buffer[i] = serial_read_byte();
+    checksum_computed += serial_master_buffer[i];
+  }
+  sync_recv();
+  uint8_t checksum_received = serial_read_byte();
+
+  if ( checksum_computed != checksum_received ) {
+    status |= SLAVE_DATA_CORRUPT;
+  } else {
+    status &= ~SLAVE_DATA_CORRUPT;
+  }
+
+  sync_recv(); //weit master output to high
+}
+
+inline
+bool serial_slave_DATA_CORRUPT(void) {
+  return status & SLAVE_DATA_CORRUPT;
+}
+
+// Copies the serial_slave_buffer to the master and sends the
+// serial_master_buffer to the slave.
+//
+// Returns:
+// 0 => no error
+// 1 => slave did not respond
+// 2 => checksum error
+int serial_update_buffers(void) {
+  // this code is very time dependent, so we need to disable interrupts
+  cli();
+
+  // signal to the slave that we want to start a transaction
+  serial_output();
+  serial_low();
+  _delay_us(SLAVE_INT_WIDTH);
+
+  // wait for the slaves response
+  serial_input_with_pullup();
+  _delay_us(SLAVE_INT_RESPONSE_TIME);
+
+  // check if the slave is present
+  if (serial_read_pin()) {
+    // slave failed to pull the line low, assume not present
+    serial_output();
+    serial_high();
+    sei();
+    return 1;
+  }
+
+  // master recive phase
+  // if the slave is present syncronize with it
+
+  uint8_t checksum_computed = 0;
+  // receive data from the slave
+  for (int i = 0; i < SERIAL_SLAVE_BUFFER_LENGTH; ++i) {
+    sync_recv();
+    serial_slave_buffer[i] = serial_read_byte();
+    checksum_computed += serial_slave_buffer[i];
+  }
+  sync_recv();
+  uint8_t checksum_received = serial_read_byte();
+
+  if (checksum_computed != checksum_received) {
+    serial_output();
+    serial_high();
+    sei();
+    return 2;
+  }
+
+  // master switch to output
+  sync_recv(); //0
+  serial_delay();  //1
+  serial_low();    //3
+  serial_output(); // 3
+  serial_delay_half1(); //4
+
+  // master send phase
+  uint8_t checksum = 0;
+
+  for (int i = 0; i < SERIAL_MASTER_BUFFER_LENGTH; ++i) {
+    sync_send();
+    serial_write_byte(serial_master_buffer[i]);
+    checksum += serial_master_buffer[i];
+  }
+  sync_send();
+  serial_write_byte(checksum);
+
+  // always, release the line when not in use
+  sync_send();
+
+  sei();
+  return 0;
+}
+
+#endif

keyboards/sol/serial.h

@@ -0,0 +1,26 @@
+#ifndef MY_SERIAL_H
+#define MY_SERIAL_H
+
+#include <stdbool.h>
+
+/* TODO:  some defines for interrupt setup */
+#define SERIAL_PIN_DDR DDRD
+#define SERIAL_PIN_PORT PORTD
+#define SERIAL_PIN_INPUT PIND
+#define SERIAL_PIN_MASK _BV(PD3) //SErial pin goes here, D0-D3
+#define SERIAL_PIN_INTERRUPT INT3_vect //"INT#" of your serial pin
+
+
+#define SERIAL_SLAVE_BUFFER_LENGTH MATRIX_ROWS/2
+#define SERIAL_MASTER_BUFFER_LENGTH MATRIX_ROWS/2
+
+// Buffers for master - slave communication
+extern volatile uint8_t serial_slave_buffer[SERIAL_SLAVE_BUFFER_LENGTH];
+extern volatile uint8_t serial_master_buffer[SERIAL_MASTER_BUFFER_LENGTH];
+
+void serial_master_init(void);
+void serial_slave_init(void);
+int serial_update_buffers(void);
+bool serial_slave_data_corrupt(void);
+
+#endif

keyboards/sol/sol.c

@@ -0,0 +1 @@
+#include "sol.h"

keyboards/sol/sol.h

@@ -0,0 +1,7 @@
+#ifndef SOL_H
+#define SOL_H
+
+#include "rev1.h"
+#include "quantum.h"
+
+#endif